Rangers boss Ally McCoist was unable to put an exact timescale on the winger's return but admits the signs do not look promising. The 23-year-old was forced out of Saturday's goalless draw against Annan in the Irn-Bru Third Division with the problem.
News of the injury is a major blow for McCoist, who recently recruited Templeton from Hearts on transfer deadline day.
The manager said: "David has obviously got a very sore one. "The good news is that it's not broken. "He has been for an X-ray but there is massive swelling and there looks to be a good bit of damage to the ligaments unfortunately."
"We are waiting on the swelling going down and then David will get a scan in the next few days. "I couldn't put a timescale on the return from injury unfortunately but it's not great."
Source: team_talk