Celtic's big Europa League last 32 clash against Inter Milan is on the horizon, but manager Ronny Deila has already been handed a blow.
Reports from the BBC today suggest that right back Mikael Lustig and playmaker Kris Commons may miss the first leg at Celtic Park, with ankle and hamstring injuries respectively.
Both players have been key to Celtic's great run of form, so Deila will be left with decisions to make over who will replace them in his starting line-up.
In Lustig's case, there may be two options. Efe Ambrose could play there if needed, but the Nigerian is more comfortable at centre back, and doesn't offer much going forward as a result.
Instead, Adam Matthews should be given the nod by Deila given that it's his natural position, and he can support the attack better than Ambrose - which Celtic will want to do in the first leg in front of the home crowd.
With Commons, Celtic will be missing a key creative figure in the final third, and a player who can score goals from range and from set pieces.
That's a big miss, but one of Celtic's new January additions could be given the chance to shine in his absence next Thursday.
Dundee United duo Gary Mackay-Steven and Stuart Armstrong both arrived on deadline day, but with Anthony Stokes likely to play on the left and Stefan Johansen working well in the centre, the position may be best served for Mackay-Steven, who offers pace and width compared to Armstrong, who would be better in a central role.
Lustig and Commons are two big misses for Celtic, but Deila has options to choose from if they do indeed sit on the sidelines against Inter.