Ireland international striker Anthony Stokes was not impressed by being brought down to Inverness, only to be sat in the stands as he was not named in the match-day squad.
Stokes then took to twitter to vent his frustation, which quickly spread across social media.
Celtic went on to win 3-1, thanks to a comical own goal forced by Carlton Cole on his Celtic debut, further cementing Stokes' place on the periphery of manager Ronnie Delia's plans, and the manager was not impressed by the Irishman's comments.
Speaking after the victory Delia explained how Stokes' actions were disrespectful to the rest of the squad:
It is (disrespectful) for the boys. We travel every week with 20 players and the manager puts out 11 and seven on the bench and there are always two left out. If that is harder for him than somebody else, then for me he is not a team player. What is important with Stokesy is that he has to show the work first before he speaks and if you do that then you always have a future. But so far he has been more (about) talking than performances.
Anthony Stokes has since apologised, again taking to twitter to ask for understanding from the fans:
Sorry for earlier Tweet. Hope fans can appreciate my frustration, heat of the moment.
— Anthony Stokes (@stoksey10) November 29, 2015
Stokes is in a very difficult position at Celtic. Clearly not a part of Delia's plans, he has made just two appearances in all competitions for The Bhoys this campaign, and will almost certainly look to leave the club in January in an attempt to force his way into Martin O'Neill's squad for Euro 2016.
However, if he is looking to find a new employer, he would be best advised to make his complaints at his current situation in a less public manner.