Manchester United advanced to the FA Cup semi-finals on Saturday, but Jose Mourinho was critical with one of his stars' performance against Brighton and Hove Albion.
Read: In-Form Lukaku Matic Send Man Utd Into FA Cup Semi-Finals
Goals from Romelu Lukaku and Nemanja Matic handed the Red Devils a 2-0 win over Brighton at Old Trafford.
However, the United manager singled out Matic after the match, despite the Serbian bagging a goal and an assist.
"I didn't like the game," Mourinho told BT Sport. "I think we deserved to win because I think the game was in control for the majority, we scored two and they didn't score, so we clearly deserved it but we didn't play the way I want.
"I had a reaction from some. Some players were mentally strong enough with football quality and that was the reason we won, but a team of 11 must have six or seven performing and wanting responsibility to play. I'm not happy with the performance, I'm happy with the result.
"When I spend two days with faster build-up and ball arriving earlier between lines and in attacking areas it depends on decisions in possession and movement in attack, I spend two days working on it but attacking players don't want the ball, defenders taking square passes, I have to feel frustrated.
"The biggest frustration is not a bad result because this can happen, it's when I work on the [training] pitch and don't see the situations on the pitch.
"Many, many times Matic was an island of personality and desire and control, surrounded by a lack of personality, class and desire.
"[Scott] McTominay lost more passes than in all his games altogether but he was a Manchester United player, he gives to the team.
"It was a question of mentality. The perfect Manchester United player has quality and personality and is consistent. When you play bad you must have personality."
Read: Mourinho Explains Why Pogba Sanchez Were Dropped
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