Kevin Keegan can't see Javier Hernandez quitting Manchester United.

Keegan is ­convinced that his once-fierce rival Sir Alex ­Ferguson will ensure that ­Hernandez enjoys a leading role ­alongside deadly Wayne Rooney and Robin van Persie.

He told the Daily Star Sunday: "It's a tough job keeping all those ­players happy.

"And it means that ­Hernandez and Welbeck really must grasp any ­starting chances that ­happen to come their way with both hands.

"We have seen Hernandez at United and Edin Dzeko at City both given the ­'supersub' tag, thanks to their ability to score after coming on off the bench.

"And as a striker, I can ­honestly say that it is the last thing you want to be known as. The only way of getting rid of the label is to be doing the ­business from the start when given the chance.

"We have seen at City that ­although Dzeko is unhappy with being on the bench so often, there is just no ­denying that when he has started games he has not looked ­anything like he has when he's come on.

"It will be interesting to see when Hernandez gets his chance and plays alongside Rooney and Van ­Persie.

"It's not going to be a fun time for any ­defender when they get together on the pitch.

"It's that goal threat which sees United starting to be the real deal again.

"And I think they are ­championship-winning ­material.

"United are ­traditionally better after Christmas, too.

"And as we all know, that is an ominous sign for City, Chelsea and the rest of the Premier League."