Glasgow Rangers have suffered another injury blow ahead of the Old Firm derby at Celtic Park. The Daily Record has revealed that Gers goalkeeper Allan McGregor is a doubt for this weekend's top-of-the-table clash.

It's also claimed that Steven Gerrard could be without four other players for Saturday's lunchtime kick-off between Rangers and Celtic, as he's already got doubts over Joe Aribo, Filip Helander and Kemar Roofe, whilst Alfredo Morelos isn't expected to be back at Ibrox until later this week after featuring for Colombia.

The Gers sit top of the Scottish Premiership table, a point ahead of Neil Lennon's side, with so much at stake heading into the first Old Firm clash of the season. Nikola Katic will not feature as he battles back from a long-term injury problem.

But it is McGregor whose absence will be most keenly felt if he is indeed forced to miss the game against Celtic. Gerrard's side have the chance to go four points clear of Celtic if the result goes their way at Parkhead. Although they may have to do so without the former 42-cap Scotland international, which will be no easy task.

It's safe to say that losing his first-choice keeper would be a big blow for Gerrard as Jon McLaughlin would have to take his place between the sticks. Whilst McLaughlin is no doubt a fine understudy, he does not have anywhere near the same level of experience as McGregor, who has been named in the Europa League squad this season, despite his advancing years.

Gerrard could be forced to start McLaughlin, which may be a gamble seeing as he has conceded six goals in three games against Celtic so far from his time with Hearts, via Transfermarkt.

Whilst the Rangers boss does have the luxury of other options, he would obviously rather start McGregor, who has made 30 appearances against their arch-rivals, keeping nine clean sheets so far, via Transfermarkt.

By comparison, McLaughlin has never actually appeared in the Old Firm derby before, which is far from ideal. To make matters worse, the 33-year-old hasn't kept a single clean sheet against Celtic in his entire career either.

Gerrard will face an anxious wait before kick-off, that's for sure.

AND in other news, Steven Gerrard should start Rangers ace Ianis Hagi in Old Firm derby...