The season has barely kicked off and a proportion of Manchester United fans are already disapproving the signing of Onana as David De Gea’s replacement after seeing how he conceded a goal from a long range loop shot which found the back of the net in the game against Real Madrid but Onana has reacted quickly go own his mistake and took responsibility for the goal. It was a silly way to concede a goal, I can’t say if the fans will forgive him easily and move on or continue to drag him for it.
Onana has made a couple of errors in pre season, overall it wasn't costly because it happened in a friendly game and it gives him the opportunity to correct his mistakes, so it would not turn costly and happen in a competitive game. It is always good if a goalkeeper is confident and good with his feet, but they have to know when to remain in their goal line and when to charge out, and Onana has to learn that pretty well, he charges too far away from his goal line which leaves him exposed, he better correct that before the new season begins.