Fellaini has drawn criticism for his performances in the first half of the season and the fuzzy-haired midfielder’s running celebration of his second-half goal in the League Cup semi-final looked like a release of emotion.
“I am very happy for Marouane because he has had difficult times since he came to the club. But he is a great guy. He trains always the best he can. I am delighted for him,” Mata told the British media.
“I think this will be a boost for his confidence. It was good to hear the stadium singing his name because he deserved it.”
Fellaini, who lost his place under Jose Mourinho earlier this season, was booed by his own supporters having conceded a late penalty during a 1-1 draw at Everton in December.
“He is a strong man...