Besiktas fired coach Ole Gunnar Solskjaer on Thursday after losing 1-0 at home to Lausanne to crash out of the UEFA Conference League 2-1 on aggregate in their qualification playoff.
Elsewhere, Crystal Palace, playing the second match of their first European campaign, ground out a goalless draw at Fredrikstad in Norway to go through to the league phase 1-0 on aggregate.
Other favourites, including AZ Alkmaar, Fiorentina, Rayo Vallecano and Mainz all cruised through while Strasbourg held on to win in Brondby.
