Manchester United legend Bryan Robson is convinced their rivals are celebrating the retirement of Sir Alex Ferguson today.

He reckons their rivals will be rubbing their hands now Fergie has gone.

He said: "I'm sure Arsenal, Man City, Liverpool and Chelsea will all be absolutely delighted.

"Everybody will be looking and thinking is there a little chink there, maybe it will go backwards for United while the new manager settles in. People who don't support United will be looking at that."