Celtic midfielder Eboue Kouassi is reportedly in danger of missing the rest of the season after sustaining a knee ligament injury.
Nir Bitton has handed Celtic an injury boost by returning to full training after several months on the sidelines.
Ajer has been out of Celtic action for three weeks with a hamstring injury.
Nir Bitton has not made a Scottish Premiership appearance for Celtic since February but he is set to boost Brendan Rodgers.
Celtic take on Rosenborg in the Europa League on Thursday.
Nir Bitton is facing an uncertain future in the Scottish Premiership with Celtic, even if he didn't leave on transfer deadline day.
Celtic star Bitton has been sidelined since February 3.
Celtic midfielder Nir Bitton has commented on interest from home country Israel.
The Israeli midfielder has been somewhat out of favour at Celtic this season.
Celtic midfielder Nir Bitton has been ruled out for the rest of the season.
Celtic and Liverpool legend Kenny Dalglish suggests Ryan Kent for Steven Gerrard’s Ibrox club Glasgow Rangers.
Axel Tuanzebe enjoyed a successful loan spell at Aston Villa last season, as he will now be looking to make his mark at Manchester United ahead of the new campaign.
Aston Villa target Lewis Dunk will reportedly join Leicester City from Brighton and Hove Albion.
Tottenham Hotspur's chase of Giovani Lo Celso may be boosted.
West Ham United are pursuing two physical centre forwards.
Icelandic midfielder Birkir Bjarnason was purchased in 2017 when Steve Bruce was the Aston Villa manager.
The German would be an excellent addition for Tottenham Hotspur.
Aston Villa are nearing a deal for Manchester City's Douglas Luiz.
Leicester City reportedly want James Forrest of Celtic.
Rangers may be about to hand Albert Rachi a move to Ibrox.
Celtic are stockpiling midfielders ahead of the summer transfer window.
Celtic midfielder Nir Bitton has been linked with a move to Sunderland.
Nir Bitton has committed his long-term future to Celtic.