As you'd expected given their resources in comparison with other teams in the country, Celtic have by far the most talented squad in the Scottish Premiership.
That's not true simply of their first-choice XI, but through regular bench choices and even players who don't feature in matchday squads.
Inevitably, that means that a bit of bloat creeps into the player pool over time, with footballers not quite good enough to make it at the club, many of whom could pursue a playing career elsewhere, still picking up big wages.
Brendan Rodgers likes to work with a core group of players who have something to offer the first-team and as such might be looking to move on some of his squad before the end of January. Outside of youth players, six moved on in the summer after the manager's arrival, including the likes of Stefan Johansen and Anthony Stokes.
This month Eoghan O'Connell and Kristoffer Ajer have gone out on loan with the focus being getting some first-team football so they can return and make an impact at the Bhoys. Nobody has left permanently yet but there's still plenty of time.
Who should stay and who should leave?
Here are THREE Celtic players we think should be shown the door this January...
Nir Bitton
Let's be fair to Nir Bitton, he is a good footballer. He just isn't the right fit for Brendan Rodgers' Celtic. There's no doubt he can perform adequately in Scottish football for the majority of the time but in Europe his lack of urgency and commitment has been frustrating for supporters.
The Israeli midfielder has struggled for game time since Stuart Armstrong burst onto the scene. He did make a start in Sunday's Scottish Cup action against Albion Rovers but that was only his second start since October.
Unlike others, Bitton is probably a fairly valuable and sellable asset and that makes us think he should be moved on more, rather than stick around.
The Hoops brought in Ivorian midfielder Kouassi Eboue this January meaning Bitton probably falls further behind in terms of opportunities for first-team football. He's too good to sit on the bench and finding a new club is probably the best for all parties in this situation.
Nadir Ciftci
Nadir Ciftci has never really settled into life at Celtic. Scoring just four goals in his two seasons at the club, he's barely featured for Rodgers - his only two appearances this season came against Gibraltar-based minnows Lincoln Red Imps.
With Leigh Griffiths and Moussa Dembele in front of him, there's little chance of him getting first-team football anytime soon, especially as he's unlikely to develop into a better player.
On top of this, Celtic should be in the market for another forward to offer a more viable alternative should either or both of the Bhoys' in-form strikers should get injured or go through a prolonged period without scoring.
Moving Ciftci on would be key to that. He's unlikely to be on massive wages but with the Hoops' limited budget, finding him a new club would get some vital cash into Rodgers' transfer coffers.
Efe Ambrose
The Celtic support have a love/hate relationship with Efe Ambrose. The love his attitude and obvious passion for the Hoops, yet fans can't shake a number of terrible performances and key mistakes made in his time at Celtic Park.
Ambrose has made close to 170 appearances for Celtic but has featured only twice under Rodgers. Like Ciftci, those both came in early Champions League qualifiers last summer and the defender has not managed to force his way into the team despite absences from Jozo Simunovic, Kolo Toure and Erik Sviatchenko.
Rodgers prefers to utilise right-back Mikael Lustig in the middle rather than turn to the Nigerian, which perhaps shows how far down the pecking order he is.
So while popular personality and presence-wise, he has no future in the squad and Celtic can't afford to keep players around who can't contribute. Fans will be hoping a team comes in for him between now and 31st January.