Rangers midfielder Niko Kranjcar ruled out for six months

Rangers midfielder Niko Kranjcar will be out of action for the next six months after suffering cruciate knee ligament damage, manager Mark Warburton has said.

The 32-year-old Croatian suffered the injury in training last month and medical checks have confirmed the serious nature of the problem.

Warburton said: "Niko has unfortunately suffered an ACL injury. He's currently having it reconstructed by one of the best surgeons down in London.

"It will be a six-month rehabilitation period for Niko. Everyone in the building is so disappointed for him. They know how hard he works."

Former QPR, Portsmouth and Tottenham player Kranjcar joined Rangers on a two-year contract in the summer.

Rangers could seek a short-term replacement.

Warburton said: "We might look for a loan option in January. We need to have strength and depth. We'll see how the squad is shaping up come then."