The full-back has been out of action since the 3-0 defeat by Hibernian in the Clydesdale Bank Premier League on November 10 when he left the pitch on a stretcher following a clash of heads.
The wound required 10 stitches and Papac has also been suffering from concussion.
Papac said: "This has been a difficult time for me. Injuries come and I must accept this. I am fighting now to come back on the pitch.
"I got concussion and this is the problem. My head is sometimes very sore. When I try to do training or any exercise then it is a little bit sore and this is a problem.
"I had a car accident maybe five years ago and have had some problems ever since then. Any problem with my head is difficult for me, but I always try to fight and I always want to be on the pitch. Now everything is fine and going better and better.
"My heart wants to always be on the pitch. I hope that maybe it's possible next week."
Meanwhile, Papac, who is out of contract in the summer, says he is no further forward in securing a new deal.
He told RangersTV: "There is nothing new. I was in touch with the club for the first time maybe a month-and-a-half ago and since then there has been nothing. There is no big news."