Marcus Rashford shakes hands with iManchester United's interim manager Ralf Rangnick after being substituted during the FA Cup third round match against Aston Villa at Old Trafford. Reuters
Marcus Rashford shakes hands with iManchester United's interim manager Ralf Rangnick after being substituted during the FA Cup third round match against Aston Villa at Old Trafford. Reuters

Rangnick struggles to explain Rashford's loss of form after Man United advance in FA Cup