The summer transfer window is in full swing. It feels weird saying that in mid-September. 

Due to the coronavirus pandemic, this year's offseason has been shifted back a few weeks and deadline day is October 5. 

The new campaign will be well underway by then having kicked off this weekend, so there's plenty of time for clubs to work out exactly what signings they need. 

Some teams like Chelsea have already conducted most of their business, with the Blues landing no less than six new stars for a combined £200m. 

Other sides, like Liverpool, are yet to really dip into the window. 

But that doesn't mean it's been a quiet summer in the Premier League. Along with Chelsea, other clubs like Everton and Manchester United have confirmed blockbuster deals.

So what are the most valuable deals to be done? In simple terms, which clubs are getting the most from their money? 

Which signings have got the most value for money?

That's a question Transfermarkt have answered as the new season kicks off, so let's check out the 30 most valuable Premier League transfers so far:  

30. Jamal Lewis | Norwich to Newcastle | Market value: €11m, fee: €16.5m

29. Tomas Soucek | Slavia Prague to West Ham | Market value: €12m, fee: €16.2m

28. Ollie Watkins | Brentford to Aston Villa | Market value: €12m, fee: €30.8m

27. Homammed Salisu | Valladolid to Southampton | Market value: €12m, fee: €12m

26. Fabio Silva | Porto to Wolves | Market value: €12m, fee: €40m 

Silva could be a huge signing

25. Aaron Ramsdale | Bournemouth to Sheffield Utd | Market value: €12.5m, fee: €20.5m

24. Alphonse Areola | PSG to Fulham | Market value: €13m, fee: Loan

23. Michy Batshuayi | Chelsea to Crystal Palace | Market value: €14m, fee: Loan

22. Matt Doherty | Wolves to Tottenham | Market value: €16m, fee: €16.8m

21. Malang Sarr | Nice to Chelsea | Market value: €16m, fee: Free transfer 

Sarr joined Chelsea on a free

20. Robin Koch | Freiburg to Leeds | Market value: €17m, fee: €13m

19. Ryan Fraser | Bournemouth to Newcastle | Market value: €17.5m, fee: Free transfer

18. Timothy Castagne | Atalanta to Leicester | Market value: €18m, fee: €21m

17. Callum Wilson | Bournemouth to Newcastle | Market value: €20m, fee: €22.5m

16. Abdoulaye Doucoure | Watford to Everton | Market value: €20m, fee: €22.1m 

Doucoure will be a valuable signing

15. Pierre-Emile Hojbjerg | Southampton to Tottenham | Market value: €20m, fee: €16.6m

14. Dean Henderson | Sheffield Utd to Man Utd | Market value: €20m, fee: Return from loan

13. Gabriel Magalhaes | Lille to Arsenal | Market value: €20m, fee: €26m

12. Willian | Chelsea to Arsenal | Market value: €22.5m, fee: Free transfer

11. Allan | Napoli to Everton | Market value: €28m, fee: €25m 

Everton have done well in this window

10. Nathan Ake | Bournemouth to Man City | Market value: €28m, fee: €45.3m

9. James Rodriguez | Real Madrid to Everton | Market value: €32m, fee: Free transfer

8. Rodrigo | Valencia to Leeds | Market value: €40m, fee: €30m

7. Hakim Ziyech | Ajax to Chelsea | Market value: €40m, fee: €40m

6. Giovani Lo Celso | Betis to Tottenham | Market value: €40m, fee: €32m 

Lo Celso made his move to Spurs permanent

5. Ben Chilwell | Leicester to Chelsea | Market value: €40m, fee: €50.2m

4. Donny van de Beek | Ajax to Man Utd | Market value: €44m, fee: €39m

3. Ferran Torres | Valencia to Man City | Market value: €45m, fee: €23m

2. Timo Werner | RB Leipzig to Chelsea | Market value: €64m, fee: €53m

1. Kai Havertz | Leverkusen to Chelsea | Market value: €81m, fee: €80m

Havertz is the most valuable transfer so far

There's some serious transfer business on that list, isn't there. 

Judging by Transfermarkt's rankings, Chelsea have had an absolutely brilliant summer. 

Four of their signings feature in the top 10, with the top two 'value for money' spots going to Havertz and Werner. 

Chelsea have done well this summer

Further down the list Newcastle, Tottenham and Everton have also done quite well with their transfers. 

It's also interesting to note that Bournemouth have sold four players on the list, suggesting that if you want to sign a Premier League bargain, look towards the south coast! 

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