Out of contract in 2023: Football's best free agents at the end of the season
10. Raphael Guerreiro
Leaving: Borussia Dortmund
Age: 32
Position: Left-back
Guerreiro's explosion of end product in the second half of the season (registering an unrivalled 12 post-World Cup assists) propelled Borussia Dortmund to the brink of the title.
The wandering fullback even scored on the final day against Mainz but couldn't haul BVB over the line, tinging his final game for the club with the sour taste of regret.