Manchester United welcome Sevilla to Old Trafford on Tuesday, but Jose Mourinho took the time in his pre-match press conference to angrily react to comments made by Frank de Boer on Saturday, labelling him as the worst coach in Premier League history.

The former Ajax coach was critical of Mourinho's record with developing youth players, even going as far as suggesting that it's a shame for Marcus Rashford that the former Real Madrid coach is in charge of his development at this time.

"I've read some quotes from the worst coach in Premier League history, Frank de Boer," he explained in his pre-match press conference.

"He had seven matches, seven defeats and zero goals and he's saying that it's not good for [Rashford] to have a coach like me."

"If he was coached by him, he would learn how to lose, because he lost every game."

Since the 0-0 draw with Sevilla at the Estadio Sanchez Pizjuan, the Reds have found form in the Premier League, recording victories over both Chelsea and Liverpool at Old Trafford, as well as coming back from 2-0 down at Crystal Palace to earn all three points.

However, the lack of an away goal in Andalusia makes Tuesday's tie difficult, something which the Portuguese coach is acutely aware of.

"It will be difficult, Sevilla didn't lose against Liverpool either home or away and the result of the first leg leaves everything open," he admitted.

"We aren't one of the best teams in the Champions League, but when you progress through this round you can start to smell the semi-final.

"When you're still in the first knockout round, everything feels far away.

"Beating Sevilla and going into the quarter final would be a good achievement."

Scott McTominay was a surprise selection for the first leg, however the academy graduate has since been an ever-present in the senior team, with Mourinho taking great delight in his development.

"He's humble, a good student," he said. "I remember at the beginning of the season listening to everything he said in the dressing room. "His humble nature is making him a good player. "He doesn't want headlines, he just wants minutes on the pitch."

The second leg kicks off at 20:45 CET this evening.

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