Transfer fees in football spiralled out of control a long time ago - but they’re crazier than ever before these days.

Top players are now going for over £100 million, while Neymar remains the most expensive player of all time following his £198 million move to Paris Saint-Germain from Barcelona in 2017.

Average Premier League footballers are now being sold for over £30 million and the situation doesn’t look like it’ll change any time soon.

However, for a variety of reasons, the market values of certain high-profile players have actually decreased since the beginning of the year.

Transfermarkt.com’s database shows the 50 players in Europe’s top leagues whose market value has decreased the most since January - and there are some surprising names that pop up, including both Lionel Messi and Cristiano Ronaldo.

50. Suso | AC Milan

Market value decrease: £9 million (20 %)

Current market value: £36 million

Perhaps people expected the 25-year-old to kick on a little bit further over the past nine months after scoring eight goals for Milan during the 2017/18 campaign.

49. Ciro Immobile | Lazio

Market value decrease: £9 million (20 %)

Current market value: £36 million

The Italian striker only scored 19 goals last term, a significantly lower tally than the 41 he bagged during the previous season.

48. Granit Xhaka | Arsenal

Market value decrease: £9 million (20 %)

Current market value: £36 million

Arsenal’s new club captain has often failed to convince many pundits.

47. Daniel Carvajal | Real Madrid

Market value decrease: £9 million (16.7 %)

Current market value: £45 million

Still a fine right-back, but Real Madrid’s unconvincing 2019 has resulted in a decrease for the Spanish right-back.

46. Luis Suarez | Barcelona

Market value decrease: £9 million (16.7 %)

Current market value: £45 million

The 32-year-old Uruguayan remains a top forward but his best years are now behind him.

45. Thibaut Courtois | Real Madrid

Market value decrease: £9 million (15.4 %)

Current market value: £49.5 million

Courtois has made too many errors since joining Real Madrid and his reputation (and market value) have suffered.

44. Nabil Fekir | Real Betis

Market value decrease: £9 million (14.3 %)

Current market value: £54 million

No disrespect intended to Real Betis, who are a fantastic club, but everyone expected Fekir to join a huge club in 2018. His final season with Lyon wasn’t amazing and he now plies his trade in Andalusia.

43. Casemiro | Real Madrid

Market value decrease: £9 million (14.3 %)

Current market value: £54 million

The Brazilian hasn’t had his best year but is still worth a significant amount of money.

42. Sergej Milinkovic-Savic | Lazio

Market value decrease: £9 million (13.3 %)

Current market value: £58.5 million

Linked with a move away from Lazio for the past few years, is the 24-year-old really as good as we all thought he would be?

41. Lorenzo Insigne | Napoli

Market value decrease: £9 million (13.3 %)

Current market value: £58.5 million

Napoli’s diminutive forward has enjoyed a decent 2019, so it’s a little surprising to see his value decrease.

40. Sergio Aguero | Man City

Market value decrease: £9 million (13.3 %)

Current market value: £58.5 million

Aguero turned 31 in June, hence the slight decrease in his market value.

39. Raphael Varane | Real Madrid

Market value decrease: £9 million (12.5 %)

Current market value: £63 million

Another player whose market value has suffered because of Real Madrid’s poor year.

38. Romelu Lukaku | Inter Milan

Market value decrease: £9 million (11.8 %)

Current market value: £67.5 million

Sold by Manchester United in the summer after failing to convince Ole Gunnar Solskjaer, Lukaku has scored three goals in seven games for Inter this season.

37. Dele Alli | Tottenham

Market value decrease: £9 million (10 %)

Current market value: £81 million

Dele only scored seven goals in all competitions last season - a far lower tally than 2016/17 (22 goals) and 2017/18 (14 goals).

Now 23 years old, the England midfielder really needs to kick on this season.

36. Cristiano Ronaldo | Juventus

Market value decrease: £9 million (10 %)

Current market value: £81 million

By far and away the most expensive 34-year-old in world football, Ronaldo’s value has only decreased slightly because of his advancing years.

35. Lionel Messi | Barcelona

Market value decrease: £9 million (6.3 %)

Current market value: £135 million

Like Ronaldo, 32-year-old Messi’s value has been decreased because of his age.

Still, he remains one of the world’s most expensive players at a whopping £135 million.

34. Islam Slimani | AS Monaco

Market value decrease: £9.9 million (68.8%)

Current market value: £4.5 million

It’s been a nightmare couple of years for Slimani, but the Algerian striker is in the process of getting his career back on track with AS Monaco.

33. Jemerson | AS Monaco

Market value decrease: £10.8 million (66.7 %)

Current market value: £5.4 million

Another big decrease in value, Jemerson is now worth just £5.4 million.

32. Amine Harit | Schalke

Market value decrease: £10.8 million (54.5 %)

Current market value: £9 million

The Moroccan midfielder didn’t enjoy his best season at Schalke last term but has hit the ground running in 2019/20, scoring three goals in six games.

31. Shkodran Mustafi | Arsenal

Market value decrease: £10.8 million (40 %)

Current market value: £16.2 million

Rightly or wrongly, the Germany international is now a bit of a laughing stock among football fans because of the number of defensive errors he makes.

30. Marek Hamsik | Dalian Yifang

Market value decrease: £10.8 million (40 %)

Current market value: £16.2 million

Hamsik has fallen off the radar since leaving Napoli for Chinese club Dalian Yifang earlier this year.

29. Sami Khedira | Juventus

Market value decrease: £11.7 million (65 %)

Current market value: £6.3 million

Khedira, who turns 33 later this season, is now in the autumn of his career.

28. Kevin Strootman | Marseille

Market value decrease: £11.7 million (52 %)

Current market value: £10.8 million

Left AS Roma for Marseille last year and his market value has been slashed by over half.

27. Cesc Fabregas | AS Monaco

Market value decrease: £11.7 million (52 %)

Current market value: £10.8 million

The 32-year-old's start to life at Monaco hasn't been particularly positive.

26. Andre Silva | Eintracht Frankfurt

Market value decrease: £11.7 million (37.1 %)

Current market value: £19.8 million

The once highly-rated Portuguese striker is on loan at Eintracht Frankfurt from AC Milan.

25. Marcos Alonso | Chelsea

Market value decrease: £11.7 million (28.9 %)

Current market value: £28.8 million

The left-back is decent going forward but doesn’t always convince defensively.

24. Eduardo Salvio | Boca Juniors

Market value decrease: £12.6 million (63.6 %)

Current market value: £7.2 million

The 29-year-old is now back in Argentina with Boca Juniors after seven years with Benfica.

23. Fred | Man Utd

Market value decrease: £13.5 million (37.5 %)

Current market value: £22.5 million

The Brazilian midfielder has been a £52 million disaster so far for Man Utd. Can he turn things around this season?

22. Diego Costa | Atletico Madrid

Market value decrease: £13.5 million (37.5 %)

Current market value: £22.5 million

Still scary but hasn’t scored many goals (just 13 in 45 games) since returning to Atletico from Chelsea.

21. Adrien Rabiot | Juventus

Market value decrease: £13.5 million (30 %)

Current market value: £31.5 million

The French midfielder ended his long spell with PSG in the summer, joining Juventus on a free transfer.

20. Gonzalo Higuain | Juventus

Market value decrease: £13.5 million (30 %)

Current market value: £31.5 million

The 31-year-old was slightly disappointing during a loan spell at Chelsea last season and has only scored one goal in six games for Juventus at the start of the current campaign.

19. Willian | Chelsea

Market value decrease: £13.5 million (30 %)

Current market value: £31.5 million

Willian turned 31 in August and it’s hard to see any club paying over £30 million for him in the near future.

18. Edinson Cavani | PSG

Market value decrease: £13.5 million (27.3 %)

Current market value: £36 million

Still prolific in front of goal, the 32-year-old’s market value decrease is presumably down to age.

17. Naby Keita | Liverpool

Market value decrease: £13.5 million (23.1 %)

Current market value: £45 million

We’re still yet to see the best of Keita in a Liverpool shirt.

16. James Rodriguez | Real Madrid

Market value decrease: £13.5 million (23.1 %)

Current market value: £45 million

Back at Real Madrid now following a two-year loan spell at Bayern Munich.

15. Isco | Real Madrid

Market value decrease: £13.5 million (20 %)

Current market value: £54 million

A wonderfully talented footballer, will Isco need to leave Madrid in 2020 to rediscover his best form?

14. Thomas Lemar | Atletico Madrid

Market value decrease: £18 million (33 %)

Current market value: £36 million

The French midfielder scored three goals in 36 games during his debut season with Atletico.

13. Jordi Alba | Barcelona

Market value decrease: £18 million (28.6 %)

Current market value: £45 million

The 30-year-old remains one of the world’s best left-backs.

12. Toni Kroos | Real Madrid

Market value decrease: £18 million (25 %)

Current market value: £54 million

Still an important player for Real Madrid, Kroos turns 30 in January.

11. Marco Asensio | Real Madrid

Market value decrease: £18 million (25 %)

Current market value: £54 million

Asensio looked like a future world-beater a couple of seasons ago but his career has stagnated recently due to inconsistent performances and injuries.

10. Gareth Bale | Real Madrid

Market value decrease: £18 million (25 %)

Current market value: £54 million

Bale is somehow still a Madrid player despite Los Blancos making it clear they wanted him to go in the summer.

9. Kevin De Bruyne | Man City

Market value decrease: £18 million (13.3 %)

Current market value: £117 million

His game-time was limited last season due to injuries but that £117 million market value will soon rise again. The Belgian has been the Premier League’s standout player during the opening weeks of the 2019/20 campaign.

8. Antoine Griezmann | Barcelona

Market value decrease: £18 million (13.3 %)

Current market value: £117 million

The Frenchman has scored three goals in eight appearances for Barcelona following his big-money move from Atleti.

7. Samuel Umtiti | Barcelona

Market value decrease: £22.5 million (35.7 %)

Current market value: £40.5 million

No longer one of Barcelona’s first-choice centre-backs, Umtiti finds himself behind Gerard Pique and Clement Lenglet in the Camp Nou pecking order.

6. Sergio Busquets | Barcelona

Market value decrease: £22.5 million (33.3 %)

Current market value: £45 million

The Barcelona star is one of the best midfielders of his generation but, at the age of 31, is beginning to look a bit past his best.

5. Mauro Icardi | PSG

Market value decrease: £22.5 million (25 %)

Current market value: £67.5 million

Fell out of favour at Inter and was snapped up by PSG in the summer.

4. Paulo Dybala | Juventus

Market value decrease: £22.5 million (22.7 %)

Current market value: £76.5 million

Juventus probably would have sold Dybala in the summer but the Argentina international decided to stay in Turin.

3. Ivan Rakitic | Barcelona

Market value decrease: £27 million (46.2 %)

Current market value: £31.5 million

This could be the 31-year-old’s final season as a Barcelona player.

2. Marcelo | Real Madrid

Market value decrease: £40.5 million (64.3 %)

Current market value: £22.5 million

It’s not been a great year for the Brazilian left-back, whose best years are now behind him,

1. Philippe Coutinho | Bayern Munich

Market value decrease: £45 million (35.7 %)

Current market value: £81 million

Currently rediscovering his form and confidence at Bayern Munich following a nightmare spell with Barcelona, the Brazilian’s market value could recover (slightly) in 2020.