However, the winter window is notoriously difficult to complete business with clubs reluctant to lose players midway through the season.
One way around the difficulties of the market could be to sign players that are currently unattached to a club or target players who will see their current deals expire in the summer.
The latter one is usually the way clubs go in January, eyeing ways to get cut price deals for players that sides don’t want to lose on a free transfer in just a few months time.
With that in mind, here, we take a look at 13 players that, according to Transfermarkt, are either currently a free agent or will be one in the summer if they do not extend their new deal.
Would you like to see any of these at Sunderland? Follow us on our social media channels and let us know your thoughts:
The latter one is usually the way clubs go in January, eyeing ways to get cut price deals for players that sides don’t want to lose on a free transfer in just a few months time.