While teams may be looking to bring players in or move players out depending on their situation, January also signals a time when there can be a look to the future and to those players whose deals expire at the end of the campaign.
Clubs are free to open discussions with individuals who are into the final six months of their contract. Looking around the Scottish Premiership there are a host of key players who will likely attract plenty of attention. Due to the financial climate of Scottish football their current side may not be in a position to offer a new deal yet, while other clubs could see an opportunity to get some talented stars in on a free.
Scroll down and click through for some of the most interesting Premiership players whose deals expire at the end of the season.

13. Ross Stewart - Ross County
The Staggies may be consigned to losing the forward. Has had plenty of interest from down south and been linked with Hibs in the past. Would be a brilliant addition to most Scottish clubs, capable of playing as a target man or a wide man. Superb work rate. Photo: Ross MacDonald - SNS Group

14. Aaron Tshibola - Kilmarnock
One of the best performing players in the league this campaign. Added consistency to his game after returning to Killie. A really smart and interesting midfielder, combative and penetrative. Photo: Rob Casey - SNS Group

