Celtic fans have taken to social networking site Twitter to make it clear that they want Ronny Deila gone.
The Bhoys lost to Ibrox side and Old Firm rivals Rangers in the semi-finals of the Scottish Cup on Sunday afternoon.
The game finished 2-2 after extra time, and the Gers won the contest 5-4 on penalties.
The performance of Celtic was not exactly bad, as they did show spirit and determination to come back twice, but they should have won the match.
After all, the Bhoys are the strongest side in Scotland and have a better team than Rangers.
In a derby anything is possible, but Celtic fans are far from happy with the final result and want Deila gone.
Celtic have not progressed under the Norwegian, who has failed to guide the Glasgow giants to the Champions League group stage for two successive seasons.
Following the defeat to Rangers, Celtic fans took to Twitter to send a clear message to the club hierarchy regarding Deila’s future.
@celticfc Complete and utter dereliction of their duties— Maxibhoy (@maxibhoy) April 17, 2016
Lawwell, Desmond,Delia ,Collins and Kennedy must go
@celticfc don't post anything else unless it's Ronny has walked or been sacked— Solomon (@KieranSolomon67) April 17, 2016
@celticfc The board's wilful negligence is directly responsible for this humiliation. The buck does not stop at Deila. Disgraceful. Go. Now.— Archie MacKay (@paperbhoy) April 17, 2016