Updated the OP with the players who should still be in contention for the squad.
I've removed the long term injured players who were on the fringes of the squad (Ings, Wilson etc) and some of the others who just aren't featuring enough (Chambers, Berahino etc). I've left Wilshere, Welbeck and Sturridge in as I think Roy will pick them if they are fit by the end of the season.
Biggest selection headaches for me now are:
Centre half - Smalling and Stones are nailed on, but Cahill and Jones are now out of their clubs first XI and Jagielka is just starting to reassert himself at Everton again after his injury. Do we need to take 4 CB's?
LB/RB - Baines and Clyne will go as long as they're fit. Shaw is rumoured to be back in March and he goes if he's fit and well. Do we take another RB? Trippier has come into the Spurs XI recently and performed well and Walker has been decent this season too.
Central Midfield - Alli and Dier have to go and both should start. No question. With Dier capable at CB/RB do we take the risk with potentially only 6 defenders? Delph is back in the City team and playing well too. Milner is having a bang average and is being used wide rather than centrally. Carrick is having an average season but offers experience in a position we're short in. Drinkwater continues to excel and has to be worthy of consideration. Wilshere is still crocked and Henderson isn't doing much. Shelvey has got his move and needs to knuckle down for six months. A real selection headache beyond Alli, Dier and Barkley who would be my starting three.
Wingers/AM's - Sterling and the Ox are nailed on, despite Ox still struggling to nail down a starting spot. Walcott isn't having the best season but will go if fit. Zaha has been very good in recent weeks in a Palace team who are struggling at the moment and there could be a space here. Lallana is his usual tidy self but there's a lack of end product
Forwards - Kane is class and Rooney is improving. Vardy just has to go. Sturridge is still a flake and can't be trusted unless he can put a good run together. Welbeck still out for the forseeable. Possibly a chance for an Austin or Afobe to get a look in the provisional squad if they end the season well.