By Dominic Toner

Niko Kranjcar could be sidelined through injury for the rest of the season, according to a report.

The Scottish Sun claim that the Rangers midfielder picked up a knee injury during training on Tuesday and there are concerns that he has serious ligament damage.

The report details that the 32-year-old collapsed in agony and was stretchered off the pitch in the bizarre training ground accident.

It is reported that the Croatian will wait to undergo scans but a cruciate injury would see him miss at least six months, meaning he would be ruled out for the majority of the season.

Kranjcar’s injury will come as a huge blow for Rangers, who face Old Firm rivals Celtic in the Scottish League Cup semi-final on Sunday.

The central midfielder was expected to play in the highly anticipated clash, as Rangers look to avenge the 5-1 defeat from the league meeting in September.

Controversial character Joey Barton remains suspended by the club following his training ground bust-up and leaves manager Mark Warburton short of midfield options against Celtic.

Kranjcar has recently settled in the Rangers side and made 15 appearances this season, scoring three goals and supplying three assists.

The Croatian moved to the Scottish giants this summer and joined with vast top-level experience after 15 years at the top for club and country.

He has previously played at English duo Tottenham and Portsmouth in the Premier League, as well Dinamo Zagreb, Hajduk Split, Rapid Vienna, Dynamo Kiev and most recently American side New York Cosmos.

In other Rangers team news, Danny Mills has given his verdict on Barton’s future at the club.