Manchester United's Sir Alex Ferguson warns Rio Ferdinand & Nemanja Vidic they are not certain of starting places

Manchester United manager Sir Alex Ferguson has hinted that Rio Ferdinand and Nemanja Vidic will have to fight for their places in the squad.

Jonny Evans, Phil Jones and Chris Smalling put in impressive performances in the 3-0 victory over Tottenham at Old Trafford on Monday night.

Ferdinand is expected to return from a hamstring injury - suffered against West Brom on the opening day of the season - for the weekend clash against Arsenal, but Vidic is sidelined for three weeks due to a calf injury.

According to The Sun, Sir Alex said: 'Rio and Nemanja are aware of the abilities of the young players. There is no question about that.

'When they are both fit, or one of them is, I will have a decision to make.'