DOUBT ... Rio Ferdinand

ALEX FERGUSON fears Rio Ferdinand will not be fit enough for Euro 2012.

Manchester United’s England defender, 33, has struggled with a back problem this season.

And Fergie said: “You play something like a game every four days at the Euros and Rio Ferdinand couldn’t do that.”

Fergie also revealed  will not be fit in time for United’s pre-season tour to South Africa and the Far East.

Defender Vidic has been out since damaging knee ligaments in December.

And Fergie said: “Vida won’t be going on the summer tour.

“He won’t be ready for that, but hopefully he will be ready for the start of the season. It’s not been easy for him, he’s not doing any running yet just work in the gym.”

Fergie says he has yet to speak to his two former England internationals Michael Owen or Paul Scholes about their futures at United.

But he hinted that Owen could be on the bench at the Stadium of Light today.