Celtic have opened discussions with a midfielder who has been frozen out of the first team, raising questions about whether manager O'Neill should sanction a departure in the January transfer window.
The player's identity has not been disclosed, but the talks suggest the club is exploring options to move the player on during the mid-season window.
O'Neill faces a decision on whether to allow the exit, which could free up squad space and wages, or retain the player for the remainder of the season.
