Manchester United boss Ralf Rangnick has taken aim at the players' eating habits.
Players have been banned from eating bacon butties by Rangnick.
The German has also ruled out burgers, fizzy drinks and booze as part of a new fitness regime at Old Trafford, says The Sun.
Players including Marcus Rashford, 24, have had their blood, saliva and urine analysed to create diet plans.
They are weighed every week and have been told to swap red meat for monkfish, salmon and chicken.
Rangnick, 63, has told players they need to get in better shape after United were knocked out of the FA Cup by Middlesbrough and held to a 1-1 draw by the Premier League's bottom side, Burnley.
A source said: “Ralf has high standards and wants to play a pressing game — but the players are not fit enough.
“He's analysed all the data and identified what they need to cut out of their diets and eat more of.
“There's no more bacon sandwiches or burgers on rest days and he's banned boozing and ordered them all into the gym for extra sessions."
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