Predictions in football are notoriously difficult, be it predicting victorious teams or potential superstar players.

Just look at England - the 'Golden Generation' didn't make waves at a single World Cup, only for the most unfancied side in years to make the semi-finals in 2018.

And it's even tougher with players.

The best example may be Cristiano Ronaldo telling people that if they think he's good, wait until they see Sporting teammate Fabio Paim (you might have to google him).

Regardless, you'll find people and publications predicting all sorts every year.

And in June 2011, FourFourTwo magazine listed their '20 under 20' - the best under-20 players to keep an eye out for.

So how did they do? Here's the list and what happened to each 'future star'.

1. Jack Wilshere - Then - Arsenal - Now - West Ham United

2. Erik Lamela - Then - River Plate - Now - Tottenham Hotspur

3. Aaron Ramsey - Then - Arsenal - Now - Juventus

4. Adem Ljajic - Then - Fiorentina - Now - Besiktas

5. Alan Dzagoev - Then - CSKA Moscow - Now - CSKA Moscow

6. Iker Muniain - Then - Athletic Bilbao - Now - Athletic Bilbao

7. David de Gea - Then - Atletico Madrid - Now - Manchester United

8. Neymar - Then - Santos - Now - Paris Saint-Germain

9. Luas Piazon - Then - Chelsea - Now - Chelsea

10. Christian Eriksen - Then - Ajax - Now - Tottenham Hotspur

11. Lacina Traore - Then - Krasnodar - Now - CFR Cluj

12. Xherdan Shaqiri - Then - Basel - Now - Liverpool

13. Eden Hazard - Then - Lille - Now - Real Madrid

14. James McCarthy - Then - Hamilton Academical - Now - Crystal Palace

15. Connor Wickham - Then - Ipswich Town - Now - Crystal Palace

16. Ryo Miyaichi - Then - Arsenal - Now - St. Pauli

17. Mario Gotze - Then - Borussia Dortmund - Now - Borussia Dortmund

18. Jeffrey Bruma - Then - Chelsea - Now - Wolfsburg

19. Ahmed Khalil - Then - Al-Ahli - Now - Shabab Al-Ahli

20. Mario Balotelli - Then - Manchester City - Now - Free Agent

Seeing as all of these players are supposedly in their prime now, it's a surprising list to read - and not just because Palace have more of them than anyone else.

You'd say that maybe four of these kicked on to be among the best in the world - De Gea, Neymar, Eriksen, and Hazard.

As for the others, injuries have certainly had a big impact on a number of careers, while some simply didn't live up to their early promise.