Onana's horror season at United was expected to end with a clash against Aston Villa at Old Trafford. However, the Cameroonian goalkeeper was left out of the Red Devils squad by Amorim, with Altay Bayindir starting in his place. The decision to drop Onana comes as the 20-time Premier League champions reportedly look to sign a new goalkeeper this summer. However, it has now been revealed why the former Inter Milan goalkeeper has been left out of the squad.