Lucas Bergstrom has been added to Chelsea's Champions League squad.
The former academy goalkeeper had been on his first senior loan at Peterborough before coming back in January and it now appears that is due to Edouard Mendy's ongoing finger injury, says Football.London.
The Senegal international suffered a broken finger and is yet to play for the Blues since the World Cup.
He had been replaced as No1 under Potter by Kepa Arrizabalaga before that but the decision to call up Bergstrom seemingly shows that he won't be returning any time soon.
Bergstrom can now travel with the Chelsea squad to Germany for the first leg last-16 tie against Borussia Dortmund as the third-choice goalkeeper behind Marcus Bettinelli.