He is on the books of TSG Hoffenheim and wears shirt number 7. At international level, he features for Switzerland U21. His main role on the pitch is Midfield. He measures 185cm in height and weighs 79kg. His stronger foot is Right. His estimated market valuation currently stands at 30M €.

His latest transfer saw him join TSG Hoffenheim from FC Basel 1893 via Free on 2025-07-01. The move was reported at 8M €.

Over 24 appearances in the Bundesliga 2025-2026, Leon Avdullahu contributed 0 goals and 1 assists, completed 16 key passes from 1439 total passes, and posted a passing accuracy of 53.1.