RUMOUR MILL: Chelsea striker Costa unhappy in London | Juventus close to deal for Cuadrado | Manchester United get Griezmann boost | Watson to quit Watford | Wenger says it's '˜vital' Oxlade-Chamberlain signs new Arsenal deal | Real Madrid president says Neymar wants to leave Barca

Chelsea might be charging towards the Premier League title, but star striker Diego Costa is not happy and wants away.
Diego Costa could be seeking a move from Chelsea.Diego Costa could be seeking a move from Chelsea.
Diego Costa could be seeking a move from Chelsea.

That’s according to the latest speculation on the football-transfer rumour-mill. Here is all the gossip on the grapevine: