To be fair, was very bad timing to post it at the exact same time Clarkson was playing (or, on the bench at least) against that team. Wasn't the smartest decision really as conspiracy theorists would all be trying to work out if there was a hidden meaning behind it.
But, Clarkson wasn't the one who posted it so not really his fault, and he looked more than happy for Bilalovic when he scored, so it's a bit of nothing.
He will leave as a Scottish Cup hero, and will likely sign for a club down south so probably won't face us in opposition. Cheers min, but don't let the kid grow up as a Celtic fan, much more fashionable and enjoyable to support the Dons.