United defender Leigh Bromby has undergone knee surgery, following the injury he suffered at Cardiff City on the penultimate weekend of the season.

The unfortunate Bromby suffered a ruptured patella during the clash with the Welshmen, and boss Neil Warnock has described the injury as "rare".

The manager has refused to set any time scale on Bromby's recovery, but has already said he expects him to be out until the start of the next year at the very earliest.

Better news on an injury front is that the boss says he is "hopeful" about Paddy Kisnorbo and Robbie Rogers being around his squad for pre-season.

Striker Davide Somma is also on the road to recovery and the boss is hoping he won't be too far behind the duo.

"Davide is a player I haven't seen too much of, but Mick Jones (assistant manager) has seen plenty of him and he loves him," said the boss.

"I know all about Paddy. He's a great lad. I had him for a week on trial when I was at Crystal Palace then Leeds came in and made him an offer and I told him it was the chance to join a great club and he should take it.

"He's determined to be fit for the start of pre-season.

"Robbie has been so unlucky. He seems to have picked up a serious injury every 20 minutes or so and I really do feel for him. He's worked hard and in his last game I thought he did really well until he had to come off.

"It's difficult for the players who have had a long-term injuries because they've been out for such a long time that it's difficult to know how they will stand up to the demands of the Championship, but I'm looking forward to working with all three of them."