Manchester United boss Sir Alex Ferguson believes Jose Mourinho will return to haunt Chelsea.

"It's a great job, for anyone," the Manchester United manager insists in advance of Chelsea's visit to Old Trafford this afternoon. "Even though Jose has gone, they still have untold resources at that club. I don't think you can say that's the end of Chelsea or their title challenge.

"They have still got the same group of players, they are all well paid, there is no obvious reason why anyone would want to leave. The only thing I can foresee happening is Jose turning up at a substantial club and wanting to buy one or two of them. You never know."