The injury to Declan John really has come at a bad time for Rangers, as with their other natural left-back Lee Wallace also out, they have had to play Andy Halliday, a midfielder by trade, in that position.

As was seen in the Scottish Cup win over Falkirk on Sunday, Halliday just isn’t suited for the position, as he kept bombing up the pitch leaving gaps at the back, with striker Jason Cummings having to get back in defence and cover for Halliday on a few occasions.

The player, who has done well to get into the Gers squad after his spell playing in Azerbaijan, just isn’t disciplined enough to play the left-back role against Celtic.

It’s ok doing it against a team like Falkirk, but it might well be a different story against the likes of James Forrest, Kieran Tierney and Patrick Roberts.

Whilst the Light Blues are undoubtedly currently in a fine run of form, Brendan Rodgers will have spotted any weaknesses in the side ahead of his team’s trip to Ibrox, and the left-back area is the most obvious one.

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Graeme Murty has got to hope that either John or Wallace recover from injury in time for the game, otherwise Halliday could be in for a very difficult match.

In other Rangers news, it’s vitally important that Declan John returns to the side 

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