None of Rangers' defenders could make a convincing case to hold onto their starting spots this weekend following their hugely disappointing defeat in Russia on Thursday night.
Steven Gerrard's men lost despite taking the lead three times. And Spartak Moscow would have secured a more comfortable win had Allan McGregor not made a string of fine saves during the contest.
Jon Flanagan is certainly one of the back four who cannot expect to keep his spot when Rangers face Motherwell on Sunday. He may get another chance, but it appears that many of the fans will be asking for a change.
Flanagan struggled to contain the home side's advances down Rangers' left flank. He was probably not helped by Glenn Middleton not providing a defensive contribution, but it was still a very poor performance from the Englishman.
And it is the display that should convince Gerrard to predominantly use Andy Halliday in the left-back role until Borna Barisic is fully fit as Flanagan has arguably not been at his best for a little while.
Halliday may not be a natural left-back or the most technically-gifted option within the squad, but he has rarely let Gerrard down since the Rangers boss arrived at Ibrox, and has adapted to the left-back role superbly this term considering that he is predominantly considered a midfielder.
If Rangers fans are asked which left-back is most likely to help the side keep a clean sheet in Barisic's absence right now, it seems likely that more will throw their support behind Halliday.
And after Flanagan's struggles on Thursday, it is difficult to see how Gerrard cannot put his faith in Halliday when Motherwell come to Ibrox this weekend.