All Manchester United matches in this season, Erik ten Hag always believe with Andre Onana indeed have to play in EFL Cup as not priority competition but never give chance for second goal keeper. I think bad decision with Erik ten Hag always trusted with Andre Onana although is not wrong but playing with not favorite competition such as EFL Cup they have use second goal keeper. Actually I disagree with many people criticizing with Andre Onana performance although he was conceded many goals but don't forget with how many saves made.
They did made some bad decisions like did not sign a new contract with David De Gea, spent massive money to buy Onana, did not spend enough money for a central defender position to improve the heart area of their defense system.
De Gea is a good goalkeeper in saving skills and he loves Manchester United after many years there. If Manchester United and Ten Hag were more cleverly, they would have been kept De Gea in their club and use him as an alternative goalkeeper for Onana. I believe De Gea will accept that position as so far he did not join any club.
Onana is over rated because he has better passing skills than De Gea but in general, combining all skills of a goalkeeper, I think he is not a better goalkeeper than De Gea. Hopefully Ten Hag will not have to pay an expensive cost by his coach position because of his belief in Onana.