Onana, who now holds the No. 1 spot at Old Trafford, has struggled to replicate the achievements of his predecessor.
Despite making several costly errors, he somewhat redeemed himself with a crucial penalty save in stoppage time during a Champions League match against FC Copenhagen.
According to The Sun, Manchester United is willing to admit that allowing De Gea to depart was a mistake. Although he is currently without a club, efforts are being made to bring the 32-year-old back to Manchester.
De Gea set the Red Devils’ all-time record for clean sheets during his previous 12-year tenure, amassing 545 appearances.
With Onana set to depart for an international tournament in January, United is hoping that De Gea will agree to a temporary return.
While they also acquired Premier League newcomer Altay Bayindir in the summer, the Red Devils prefer an established player to replace Onana and potentially even challenge him.