Jamie Carragher claims Andre Onana is becoming a 'liability' at Manchester United
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Andre Onana has been warned he could be dropped by Manchester United manager Erik ten Hag if he continues to struggle.
The Cameroon international has made several major errors, including a calamitous mistake against Galatasaray in the Champions League on Wednesday night.
Onana fumbled Hakim Ziyech's free-kick to allow the Turkish side a route back into the match when United were leading 3-1.
They eventually drew the match 3-3 and are now facing potential elimination from the competition, with Ten Hag's side now needing to beat Bayern Munich and hope Galatasaray and Copenhagen draw to progress to the last 16.
"Onana has cost United too many cheap goals. The hope that the worst was behind him after a poor start to his Old Trafford career has been blown out of the water and Wednesday was a huge step backwards," wrote Carragher.
"Onana has already developed a reputation for being a liability. That will take a long time to overcome and reverse.
"On a personal level, I feel sorry for him. The criticism is not intended to be cruel. It is a reflection of the standards expected at the top of the professional game."
Carragher added: "The performance in Turkey was unacceptable for a Manchester United goalkeeper. You would not expect an Under 18 keeper to make the basic handling error for Galatasaray's second goal.
"If a youth keeper was promoted and played like Onana on Wednesday evening, he would probably never feature for the first team again."
Carragher also warned Onana that Ten Hag could follow Sir Alex Ferguson's example and ruthlessly drop him if he continues to perform poorly.
"No manager understood the importance of a reliable goalkeeper more than Sir Alex Ferguson. Ten Hag might ask himself 'what would Fergie do?' and there is plenty of material to guide him," added Carragher.
"From Jim Leighton through to Massimo Taibi, Mark Bosnich and Fabian Barthez, Ferguson was ruthless when he believed his keeper was costing games.
"It did not matter if he signed the number 1, even for a decent fee. You either met the required level or you were out."
Onana will hoping to bounce back quickly from his latest error when United return to Premier League action away to Newcastle on Saturday.