United didn't finish 15th purely because of Onana. Not only did we change managers mid season but we changed how we played. On top of that we had a young and weak forward line that barely scored.

However, Onana had 2 seasons where he proved he wasn't good enough. Not only did he throw us out of the Champions League, literally throwing the ball into his own net, despite United scoring for fun, but last season his mistakes made it impossible to win games.

You will be reminded that Arteta turned over Leno and then Ramsdale because they cost Arsenal games.