Zak Rudden is on the comeback trail after Rangers fears he was facing months on the sidelines with a serious knee injury, Football Insider understands.

The 19-year-old has returned to Auchenhowie from loan club Plymouth Argyle for medical treatment.

Ibrox sources have told Football Insider that the club’s medics initially believed Rudden would be be out for a lengthy period after breaking down in training with a knee problem.

But their worst fears have not been realised and Rudden is heading back to Plymouth on Monday to return to training.

The League Two club are now hopeful his spell on the sidelines will be just a short one after he missed last Saturday’s defeat to Cheltenham.

Rangers had been wary of the teenage forward aggravating his knee after he missed all of pre-season and then underwent a knee operation on a torn meniscus.

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The Scotland youth international has now been given the all-clear to resume his career in the English lower leagues as he looks to continue his development down south.

Rudden is yet to make his first-team debut for Rangers but scored 12 goals on loan at Scottish League One outfit Falkirk last season.

He’s yet to hit the back of the net for Plymouth in seven appearances, made up of two starts and five from the substitute’s bench.

Rudden has a prolific record for Scotland Under-19s, scoring six goals in 14 matches.

He has also represented his country at Under-17s and Under-16s level.

In other Rangers news, it can be REVEALED that the club have offered £20,000-a-week to international ace as talks underway on out-of-window deal.