The January transfer window offers clubs in desperate need of reinforcements the chance to pick up a bargain.
Most teams are unwilling to part with their star players midway through the season, but free agents are a great option to bolster a squad at a fraction of the price.
Manchester United are among those who could pursue the free agent market after Anthony Martial was ruled out for 10 weeks, leaving Rasmus Hojlund as their only fit recognised striker.
So, which forgotten footballing stars are lurking as free agents this transfer window and who could potentially be snapped up?