Celtic have both of their two first-choice right-backs out on international duty.
Celtic youngster Anthony Ralston has been given first-team chances by Brendan Rodgers.
Celtic and Kilmarnock played out a goalless draw on Wednesday night, with Jack Hendry playing out of position.
The Celtic-owned defender impressed for his loan club on Sunday.
On loan Celtic right-back Anthony Ralston will be looking to finish the season strong and help Dundee United to promotion in the hope to capture Brendan Rodgers' attention.
Mikael Lustig wants to stay at Celtic, but his future could depend on Anthony Ralston’s progress.
Celtic defender Anthony Ralston has commented on his loan move to Dundee United.
Celtic youngster Anthony Ralston recently joined Dundee United on an emergency loan.
Has Celtic's Mikael Lustig just been sent clear message by Brendan Rodgers?
Ralston impressed for Celtic earlier in the campaign.