Lewin Blum, born on 27 July 2001 (age 24), is a Swiss right-back whose senior career has been shaped mainly at Young Boys. He has been valued at around £2.5m by Transfermarkt, which feels about right for a player with a solid body of league football behind him rather than a great deal of noise around him.
His development was helped by time away from the centre of things, with loan football giving him the regular senior minutes young defenders tend to need before anyone trusts them properly. Those spells matter, but they sit in the background of the wider story rather than defining it.
At Young Boys, Blum became a regular first-team right-back over five seasons, making 103 league appearances and scoring once. His busiest league campaign came in 2022-23, when he played 31 times and got that solitary league goal. It was a straightforward kind of progress: games, responsibility, and a place in a strong domestic side without much need for theatre.
By 2025-26 he was with Charleroi, where he made 23 league appearances. That move gave his career a different setting after a long Young Boys spell, though the main weight of his senior record still sits in Bern.
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