The Belgian struggled against Motherwell.
Celtic today were dealt something of a blow as they were defeated at home against Motherwell in the Scottish Premiership.
It was a truly awful display at Celtic Park from the reigning champions, who certainly did not deserve to come away with anything from the tie.
The most concerning factor about the defeat was the fact a former Celtic striker had so much joy up against The Bhoy's defenders - in particular Dedryck Boyata.
Motherwell forward Scott McDonald bullied the Celtic defenders throughout the game with the nous of the veteran Australian proving too much for them.
The Belgian defender has not won over the fans in Glasgow since arriving in the summer as a replacement for the Southampton-bound Virgil van Dijk.
But he has failed to meet the standards that the Dutchman set during his time at Celtic and the fans are getting close to giving up on the former Manchester City talent.
In fact, if you are to go by the reaction of the Celtic fans on Twitter, it looks like they already have...
Boyata could have scored 3 overhead kicks in the last 6 minutes and would have still only got a 4 outta 10,guy is rank rotten— Big J (@JordanMcMenemy) December 19, 2015
@pg_bell we play one up top!!! Against poor sides, and his signings are v questionable!!! Boyata, simo, cifti et al, not good enough— keith campbell (@keithcampbell79) December 19, 2015
@Barcabhoy1 that's what I'm thinking. Moyes or mourinho couldn't make boyata a good centre half !— craig (@cdmurphy1980) December 19, 2015
Wed be better erecting big billys statue along the 18 yard line ..it would still defend better than boyata— celtic matchworn . (@celticmatchworn) December 19, 2015
Don't drop bombs, drop boyata!— Shaun Macdonald (@shaunmac1967) December 19, 2015
Poor performance today as players even look confused. boyata needs to go terrible from him since he signed for celtic @BBCSportsound— OmGitsDaRyL (@theOnebhoy) December 19, 2015
Boyata not good enough bullied and just a coward— John (@johnfm15) December 19, 2015
Any manager who spends allegedly 1.6 million on boyata should be sacked— J Lo (@jaymanknowsshit) December 19, 2015
Lot of folk saying Boyata has been improving - sorry, each game I see him there's more and more I don't like.— Eeramacaroonbar (@Eeramacaroonbar) December 19, 2015
Dreadful defending from Boyata again. Motherwell could be 5 or 6 up here. There is no progress whatsoever under Deila. He has to go now.— Tmomy Blal (@tommy_ball) December 19, 2015