Manchester United great Roy Keane slammed Fred during yesterday's FA Cup final defeat to Manchester City.
Keane blamed Fred for City's winning goal which came from a free-kick the Brazilian conceded.
The Irishman says Fred's United career has been plagued by such errors.
"Fred had Kevin de Bruyne where he wants him," Keane told ITV Sport. "De Bruyne has his back to goal and then Fred fouls him.
"It's the height of stupidity. But we've seen that from him so many times over the years."