Oliver Glasner's future as Crystal Palace manager is in serious doubt after the club's poor run of form.
The Austrian manager has already announced that he will leave the club in the summer when his current contract expires.
But a section of Palace's away support turned on the 51-year-old during Thursday's 1-1 draw against Zrinjski Mostar in the Europa Conference League, chanting "we want Glasner out".
Sources have told BBC Sport that the club is now considering Glasner's position after a run of just one win from their last 15 games.