Earlier this week, Hearts confirmed the signing of Barrie McKay, the former Rangers winger who had been released by Swansea City, while St Johnstone manager Callum Davidson has admitted it is a market he is looking at following an injury to midfielder Cammy MacPherson.
As long as players are released from their contracts or free agents before the close of the transfer window they remain available for clubs to sign.
It is a market which has plenty of potential with a number of players who would be shrewd additions to squads in the cinch Premiership. There are individuals with Premier League experience in England or have proven themselves in Scotland already, while there are those who have performed well in Europe.
Scroll down and click through to see a selection of stars available on a free contract.

. (LtoR) Wales' forward Hal Robson-Kanu and Portugal's defender Bruno Alves vie for the ball during the Euro 2016 semi-final football match between Portugal and Wales at the Parc Olympique Lyonnais stadium in Décines-Charpieu, near Lyon, on July 6, 2016. / AFP / ROMAIN LAFABREGUE (Photo credit should read ROMAIN LAFABREGUE/AFP via Getty Images)
Hal Robson-Kanu in action for Wales. (Photo credit should read ROMAIN LAFABREGUE/AFP via Getty Images) Photo: ROMAIN LAFABREGUE

. Efe Ambrose
The Nigerian is a popular figure in Scotland from his time with Livingston, Hibs and Celtic. Experienced and versatile, he got involved in the coaching side of things at Livi. Photo: Craig Williamson - SNS Group

. Muhamed Besic
If a team are on the lookout for a combative defensive midfielder, Besic is a great option. Can play further up in midfield or at right-back but is at his best playing a more destructive role. Photo: Nathan Stirk

. Hal Robson-Kanu
The type of striker who is not prolific who ends up in Scotland. Has brilliant pedigree with plenty of games in the Championship and the Premier League. A hard-working facilitator who will be remembered for his wonderful goal against Belgium in Euro 2016. Owns a Turmeric company. Photo: Pool

9. Miroslav Stoch
A hugely experienced winger who has won league titles in the Netherlands, Turkey, the UAE and Czech Republic. In 2007, admitted he looked up to Ronaldinho and Ronaldo. Still a Slovakian international. Photo: Michael Steele

10. Aron Jóhannsson
A former US international and Icelandic Under-21 international. The striker left Lech Poznan on the final day of the window. Has played in the top divisions in Poland, the Netherlands, Sweden, Denmark and Germany and has a respectable goal return, including a 17-goal campaign in the Eredivisie. Photo: Dean Mouhtaropoulos

11. Esmael Goncalves
The former Hearts and St Mirren striker has played in Uzbekistan, Japan, Iran and India since leaving Tynecastle. Has had good scoring records at a few clubs. Eight in 16 for St Mirren, 22 in 54 for Anorthosis Famagusta and 15 in 42 for Hearts. Photo: SNS Group Craig Foy

12. Steve Lawson
The former Livingston star showed his worth at Almondvale over three seasons and 65 appearances. While being versatile, Lawson was at his best in a central role for Livi. Photo: Sammy Turner - SNS Group