Manchester United legend Roy Keane blasted Fred after their defeat to Manchester City last night.
Keane was not impressed with the way Brazilian Fred had defended as City grabbed their second goal.
Fred failed to track back, according to the Irishman, as Raheem Sterling broke through the United midfield before teeing up Leroy Sane.
"You need to see Fred for the second goal if you are on about players giving it all," Keane said.
"That isn't giving his all, that is cheating. Just cheating letting the guy run off him."
Bernardo Silva had earlier opened the scoring for the visitors with a clever piece of footwork to beat Luke Shaw before beating David De Gea at his near post.