Celtic’s injury crisis just got a whole lot worse, as Colby Donovan has now withdrawn from international duty with Scotland’s U21’s after picking up an injury at Tannadice.

A terrible season for injuries has got even worse for Martin O’ Neill, as he may be without many key players in the race for the Scottish Premiership.

Jota has been missing the whole season, as well as Alistair Johnston and Cameron Carter-Vickers who have been absent for majority of the campaign.

Arne Engels and Callum Osmand have had their injury issues. However, the pair are expected back to action shortly.

But Kasper Schmeichel’s season is officially over, and loanee right-back Julian Araujo is sidelined as well.

Speaking on Araujo, O’ Neill said: “He’s down getting treatment and being rehabbed at Bournemouth.

“I’m not sure when he’ll be back, but the extra two weeks could help.”

And on the subjects of right-backs, Colby Donovan is the latest injury blow in the Celtic camp.

Donovan has withdrawn from Scotland U21 duty, after crashing into the advertisement board at Tannadice on Sunday, which forced him to be substituted.

However, it wasn’t a like for like replacement for the young Scotsman. Instead, O’Neill chose to move Reo Hatate to right-back, and later in the match moved winger Yang to the position.

It’s another issue for Martin O’ Neill, but the encouragement of Alistair Johnston being called up for international duty, may well give confidence that the Canadian will be fit and able to return shortly.

Will these injury blows have an impact on Celtic’s chase for the title?