Costel Pantilimon could replace Joe Hart in the Premier League if he impresses in Wednesday's Capital One Cup tie at Newcastle, says ex-Manchester City keeper Joe Corrigan.
Hart's error allowed Fernando Torres to score Chelsea's late winner in their 2-1 victory over City on Sunday.
"There's a League Cup game coming up and I think Pantilimon will play," Corrigan told BBC Radio 5 live.
"Maybe the boss is thinking 'I'll give [Pantilimon] a go if he does well'."
Hart's mistake at Stamford Bridge was the latest in a string of errors in the opening weeks of the season, and Corrigan believes Pantilimon could become manager Manuel Pellegrini's first choice if he impresses against the Magpies.
Romanian Pantilimon, 26, joined City in 2011 but has never featured in the Premier League.
But even if England international Hart has a spell on the sidelines with his club, Corrigan, who played for City between 1967 and 1983 and won nine England caps, believes the 26-year-old has the ability to respond.
"I think the manager will make an assessment if he [Pantilimon] plays well against a Premier League side," said Corrigan, 64.
"Joe has to accept whatever happens and go back and work. He's got the quality.
"He's got to accept all the flack, it's difficult because he's still a young man. He knows he's made a mistake."
Corrigan also feels the changes in Hart's goalkeeper coaches has impacted on his performances.
At international level he is coached by Dave Watson, who also worked with Hart during his loan spell at Birmingham City in 2009-10.
Corrigan added: "I worry what the input of another foreign goalkeeping coach has on him.
"He had an Italian for three or four years. He now has a Spanish goalkeeping coach, and their management of goalkeeping isn't the same as a British goalkeeping coach.
"He has the England goalkeeping coach Dave Watson who I think is a superb goalkeeping coach and he only meets up with Dave every international gathering. It's got to be difficult for him."