Diego Costa is stuck in the worst goal drought of his Chelsea career amid fears his head has been turned by a fresh £650,000-a-week offer from China.

Costa knows there is a new deal on the table from the Chinese Super League worth £34million a year AFTER tax – which would make him the highest paid player in the world.

And there are growing fears that is proving a huge distraction – and the real reason behind Costa’s worrying lack of form as Chelsea’s season enters its most crucial phase.

Spain striker Costa, 28, looked set to leave Stamford Bridge in January when Tianjin Quanjia tried to sign him in a stunning £90m package.