Andre Onana penalty heroics will boost him and Manchester United - Pep Guardiola

Pep Guardiola believes Andre Onana's penalty heroics in the Champions League will give the under-fire goalkeeper a confidence boost ahead of the Manchester derby on Sunday.

Guardiola is a long-term admirer of the Cameroonian, singling him out as Inter Milan’s most dangerous player ahead of last season’s Champions League final which Manchester City won 1-0 to claim a historic treble.

Since moving to Manchester United in the summer, Onana has made a number of errors but he preserved an important 1-0 Champions League win over Copenhagen in midweek with a penalty save in added time.

Onana was mobbed by his team-mates in the aftermath and will now head into this weekend with his spirits raised, according to Guardiola, who has been well aware of the ex-Ajax shot-stopper for several years.

The Manchester City boss said: "I remember we have a common friend who spoke very highly of him but personally I met him in Amsterdam. He’s an exceptional player and now at United.

"Before the game I always expect the best of the players we are going to face. I prefer to see the strengths than the weakness they have.

"He saved a penalty in the last minute which helped Manchester United to stay in contention to qualify for the last 16. Mentally it’s a good boost for them and for him.

"Everyone needs time (to adapt to the Premier League), not just the managers but players, keepers. Everyone. Sometimes people are quicker but I have a high opinion of him as a keeper."

Jack Grealish was restored to City’s starting XI for their 3-1 Champions League victory at Swiss outfit Young Boys on Wednesday and he stood out on the left wing before his influence waned after half-time.

The England midfielder has recently been a bit-part figure following a month on the