He said: "I've just not got the heart for it any more and I don't see the point in going through the motions.
"I've had a lot of knockbacks in my time but this has nothing to do with injury.
"I just don't enjoy it anymore."
A new Premier League campaign is approaching which means teams have dusted off their passports to go on pre-season tours.
The latest gossip and rumours from the newspapers and online:The Guardian says Manchester United have offered £100million for PAUL POGBA
It would be fair to say that Arsenal have been underwhelming in this transfer, a state not helped by the
It seems that Manchester United will not be resting on their laurels with the bid for Pogba looking to be
The transfer window looks set to host another Premier League battle with Everton and Chelsea chasing the signature of a
The latest gossip and rumours from the newspapers and online:The Daily Mirror claims Lyon have told Arsenal and West Ham