Sanchez was frozen out for large parts of last season under Mauricio Pochettino but has come back into the starting XI under new boss Enzo Maresca.
The jury is still out on the Spaniard, though, who has made a few notable errors in goal already this campaign.
Kelleher, meanwhile, impressed in his second start in midweek as he made two crucial saves to help Liverpool win 1-0 over RB Leipzig in the Champions League.
The Republic of Ireland international has often played second fiddle to Alisson throughout his Anfield career but has always excelled when replacing the Brazillian.
Kelleher hinted earlier in the year about his desire to become a first-choice keeper in the near future and Jason Cundy believes his former club should offer him that opportunity at Stamford Bridge.
‘What was really evident to me at the weekend was that Chelsea’s No.1 isn’t as good as Liverpool’s No.2,’ Cundy said on talkSPORT.
‘Whenever I see Kelleher play he looks top drawer.
‘Sometimes when you see a No.2 goalkeeper come in, you might see the defence drop a bit deeper or they’re hesitant to do back passes.
‘Whenever Kelleher’s in goal and he’s played a lot in the last 18 months to two years both in the Carabao Cup and Champions League, he never looks out of place.
‘Liverpool don’t look any weaker with him in goal and that is a massive compliment by the way.
‘If you’re a Liverpool fan, I know you’ve got [Giorgi] Mamardashvili coming in, but you don’t want Kelleher to go either. He’s too good to be a number two. I want him [at Chelsea].’
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