The summer transfer window is now done and dusted, but second-tier sides are still able to snap up players who are currently out of contract, and there's a number of intriguing options still out there on the hunt for a new club.
From former England internationals to injury-plagued players looking for a fresh start, the free agent market is a varied, often risky business to be involved in. However, if a club strikes lucky, they can find themselves reaping the rewards when their new signing defies the odds and revives their career.
Here's a look at 15 free agents that Luton Town and all their divisional rivals could look to bring in - some more realistic than others, granted - now that the transfer window has closed:
![Is there every an end of transfer window run-down that doesn't contain the former Colombia international? The veteran midfielder is on the look-out for another club, after being released by Watford at the end of last season.](https://www.thestar.co.uk/webimg/b25lY21zOjkwYTU3YTc4LTJhYTUtNGNiNi04M2MyLThkOTFkY2IyNGE1Mzo5MjI4ODM3My05ODk4LTRkZTEtODhjMS1iZTc0NjZhOWMxMTg=.jpg?crop=3:2&width=800)
1. Carlos Sanchez - CM
Is there every an end of transfer window run-down that doesn't contain the former Colombia international? The veteran midfielder is on the look-out for another club, after being released by Watford at the end of last season. Photo: Julian Finney
![Released by Nottingham Forest after injury problems last season, the hard-working midfielder could prove a bargain acquisition should he manage to stay fit. He's played top tier football in Turkey, France and Russia in the past.](https://www.thestar.co.uk/webimg/b25lY21zOmM5Yjg4YTU1LTY2ZjMtNGQyNC1hMmRhLTczNzkxNTA4YThkMjozOGE3Yzg3My1hNzNjLTQ5ODAtYmRjOS02NjU3NTk4NmMzNjA=.jpg?crop=3:2&width=800)
2. Samba Sow - CM
Released by Nottingham Forest after injury problems last season, the hard-working midfielder could prove a bargain acquisition should he manage to stay fit. He's played top tier football in Turkey, France and Russia in the past. Photo: Laurence Griffiths
![Deemed surplus to Leeds United, the Swiss powerhouse could still do a job for a number of Championship sides - even if it is on a one-season basis. He made 22 appearances in the season that saw the Whites finally secure promotion back to the top tier.](https://www.thestar.co.uk/webimg/b25lY21zOjAwN2QzMmMwLWU5MTEtNGExNS05N2I2LTg3ZjhkZmQyYjIxYjpkNGIzYmFjNy1lODBhLTRmNzctOTA0Mi0wOWIxMzQ1OTMwYWQ=.jpg?crop=3:2&width=800)
3. Gaetano Berardi - CB
Deemed surplus to Leeds United, the Swiss powerhouse could still do a job for a number of Championship sides - even if it is on a one-season basis. He made 22 appearances in the season that saw the Whites finally secure promotion back to the top tier. Photo: Pool
![He had his contract with Norwich City terminated by mutual consent last week, but the 21-year-old could yet land himself a deal at an English club. He never managed to break into the Norwich side, but could impress if given a fresh start.](https://www.thestar.co.uk/webimg/b25lY21zOmY5ZDI2YjYxLTQzN2MtNDgzOS05YWEzLTQwOTM2M2NkNzdmMjoxZjY0MGZhOS1mZjA0LTQ0ZDUtYjZkOC00OTM5MjczNjdmYjE=.jpg?crop=3:2&width=800)
4. Melvin Sitti - CM
He had his contract with Norwich City terminated by mutual consent last week, but the 21-year-old could yet land himself a deal at an English club. He never managed to break into the Norwich side, but could impress if given a fresh start. Photo: Stephen Pond