He scored the key goal in Man United’s Europa League semi-final second leg clash against Celta Vigo at Old Trafford and has come a long way since earlier in the campaign.
The Belgian was booed by a section of fans earlier in the season after he conceded a penalty in the closing minutes of the game, even though he was introduced to try and hold onto a lead, and things got worse after his red card in the Manchester derby.
However, he was the hero on Thursday night and he claims he’s working hard to keep his place in the team under Mourinho.
“I know my quality, I know what I can do,” he said.
“I agree my first season was difficult here but after that I did well. I played games, I have more than 100 games at Man United so for me I never had a problem here.
“At the beginning it was difficult – a new club, new team-mates, but after the first season I’ve been happy here and I enjoy my football.
“I have great team-mates, I know everyone in the club so it’s easier for me.
“My goal was good for me and the team. The most important thing is the team. Every day we train, every three days we have a game and we’ve had a lot of games this season. All the team deserve to be in the final as we give everything in every game.
“We have great lads in the team, the staff do well with the team, so I am happy.
“We feel good because it’s been a lot of games and now we have the final. We have to give everything, and it will be a good game. Ajax are a young, talented team with good players so we have to be ready.”
He booked a place for United in the final in Stockholm against Ajax and there’s no doubt he’s set for a place in the starting line-up on May 24.
Fellaini has often been unfairly criticised at United, but it’s clear that he knows how to listen to instructions and get the job done, something Mourinho loves in his players.