Manchester United seems to be moving quickly to recruit defenders who have strong potential in maintaining their defense.
Manchester United really needs defenders because their defense was just too poor last season, which made their goalkeepers performances worse. Even as we know that Onana made some stupid mistakes last season and conceded so many goals, if Manchester United had a strong defense, then he wouldn’t have conceded so much, some balls would be blocked by the defenders and wouldn’t get to the goalkeeper, but since their defense was weak, it also affected their goalkeeper. Ten Hag has really done well by trying to strengthen the defense of the club. I'm sure it’s really going to help the team’s performance.
The case of Onana and David De Gea at a point seems similar. If you can remember vividly, Manchester United defense didn't suddenly go wrong in the time of Onana. Even when David the Gea was around, Manchester United had once had bad defense. It was David that served Manchester United from even being relegated that season. That was when he was nicknamed David de save. We also said something about the situation then, that if David had better defense he would be the best goalie in the world. This same situation has faced Onana and we are thinking that his problem is the defense. There is no doubt Onana is a good goalie, but he isn't exceptional and I cannot boldly say that he is better than David de Gea. He is purely better than David only in footing and passes and not in savings.
However, the success of any goalkeeper depends on the formidableness of his defence line.