Jesper Karlsson, born on 25 July 1998 (age 28), is a Swedish left winger with Servette, where he wears the number 21 shirt. He is a wide forward by trade rather than a utility piece, and his better work has come from that left side.
His strongest league season came at AZ in 2021-22, when he scored 15 goals in 34 appearances. That remains the clearest marker of his attacking output, and it is the spell that gives most shape to his profile beyond Sweden.
In 2026-27, Karlsson has made four Super League appearances for Servette. His current market value is around £3.5m, according to Transfermarkt.
Karlsson’s career, at this stage, is that of an established Swedish wide player whose best scoring season came at AZ and who is now part of Servette’s squad in Switzerland.
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