Chris Sutton has told Mail Sport's It's All Kicking Off show he fears David Raya's errors could cost Arsenal the Premier League title.
Mikel Arteta has kept faith with the Spanish goalkeeper since replacing England international Aaron Ramsdale earlier in the campaign.
But Raya was at fault for two goals in Arsenal's 4-3 win at Luton Town on Tuesday night. He allowed Elijah Adebayo to out-jump him and score, before seeing Ross Barkley's shot squirm underneath him.
It required a last-gasp Declan Rice header to bail Arsenal out following the errors.
Afterwards, Arteta looked uncomfortable as he refused to discuss the goalkeeping situation.
Sutton believes Arteta may be unwilling to acknowledge he has made a mistake when it comes to his No 1 keeper.
'The one thing from Arteta's perspective, and this Raya-Ramsdale debate: Will his stubbornness to carry on with David Raya in the position they're in, could that cost them the title at the end of the season?' Sutton asked on It's All Kicking Off.
'I just don't get it. I know what happened at the start, he was hinting there would be an even spread of games amongst both goalkeepers but the other night I thought there was a couple of huge errors.
'He can't keep making those errors if Arsenal want to win the Premier League.'
Mail Sport's football editor Ian Ladyman suggested that Arteta's faith in Raya could come good over time.
He said: 'Raya has had the best part of a third of the season now to show he's the right man and he hasn't really shown it. So you'd think common sense suggests Mikel Arteta takes him out the firing line.
'However, if I take you back to what we talked about on Monday about Tottenham and you said that the reason Tottenham are playing the way they're playing, apart fromRead on m.allfootballapp.com