John Textor’s dual ownership ties to both Crystal Palace and Olympique Lyon triggered the ruling, with UEFA stating his sale of shares came after the March 1 compliance deadline.

The Premier League club had challenged the decision to drop them down to the Conference League for allegedly not complying with the governing body's multi-club ownership rules.

However, Palace secured their spot in the Europa League by winning the FA Cup in May. Glasner’s side downed Aston Villa, who qualified for the competition via a sixth-place Premier League finish, in the semi-final before edging past Manchester City 1–0 in the final.