Marvin Keller is a Swiss goalkeeper, born on 3 July 2002 (age 24), now with Young Boys. An imposing 6ft 3in (1.90m), he wears the number 1 shirt and is valued at around £3m, according to Transfermarkt.
His early development included a useful spell at FC Wil 1900, where the 2021-22 season gave him regular senior football. Thirty league appearances at that stage of a goalkeeper’s career is not window dressing; it is the sort of workload that tends to matter more than polite bench education.
Keller has since moved on to Young Boys, where he has made three Super League appearances in 2026-27. For now, his career reads as that of a young Swiss keeper who has already had proper minutes, a solid grounding away from the spotlight, and a place in one of Switzerland’s bigger squads.
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