Celtic will face a rookie keeper next week in their Champions League showdown after new Young Boys boss Giorgio Contini axed their No.1 and captain David von Ballmoos.
The Hoops know that a win against the struggling Swiss side will see them through to the play-offs with a game to spare - against Aston Villa.
Young Boys have endured a miserable season and sit bottom of the new-look Champions League table with no points from six games and a goal difference of -19.
They appointed former Switzerland assistant manager Contini last month and he's immediately acted by changing his goalkeeper for the rest of the season.
Young Boys will field 22-year-old Marvin Keller at Parkhead, with the Swiss Under 21s international only having played four games for the club previously.
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They have dumped long-serving shotstopper von Ballmoos, who has been at Young Boys for ten years.
Contini said: "It wasn't a gut decision, but one that matured in an analytical process over a long period of time and that we on the staff made with full conviction."
Young Boys return to domestic action after their winter break today with a game against bottom club Winterthur. They are in 9th place, eight points behind leaders Lugano.
