Marcus Rashford is doing what he can to rediscover his form with Manchester United.

The Telegraph says Rashford is going through a tough period in his career as his form and confidence have dipped but he has been working hard to try to arrest his recent slump.

Rashford is at the Red Devils' training ground 12 hours a day as he undertakes three sessions.

The report also claims that he's picking the brains of fitness fanatic and five-time Ballon d'Or winner Cristiano Ronaldo about his muscle mass when he was 24 years old.

Fans turned on him in Monday night's FA Cup third-round win over Aston Villa as they questioned his desire after he gave up when there appeared to be a chance to turn in a rebound.