Cristiano Ronaldo went home early from training yesterday with a thigh injury and is in doubt for tomorrow’s Premier League match against Aston Villa.

Ronaldo lost Monday’s 1-0 win in the third round of the FA Cup against Villa due to an injury.

But this is a particular problem raised in training at Carrington yesterday.

Ronaldo was seen by United medical specialists before going home where he would use his private oxygen room he had set up at his home.

Helps recover from injury by inhaling fresh air directly into the blood plasma, which repairs any damaged tissue.

The 36-year-old United legend is desperate to be fit for Villa and help his team-mates get their offer for a position in the top four on the right track.