In light of Juan Mata's prospective transfer from Chelsea to Manchester United, nobody seems to look at how controversial his transfer really is.

Probably because the Spaniard is now not seen as an important figure at Stamford Bridge, fans are letting him go with all the best wishes in what actually is a switch to one of your biggest rivals.

Two years ago when Robin van Persie joined the Red Devils, the Gunners immediately started calling him traitor and so on.

Luckily for Mata, no one is giving him that kind of treatment, and it is like he is now going to join Manchester United, in what will be the latest in a growing list of controversial transfers.

Now we will have a look at the 10 biggest traitors in European football. Who do you think should be on the list? Have your say in the comments below!



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