Top 5 players who were allowed to leave on a free transfer

#1 Robert Lewandowski (Borussia Dortmund to Bayern Munich)

Robert Lewandowski celebrates with his teammates

This is undoubtedly the biggest move in Bosman transfer history. In the summer of 2014, Robert Lewandowski did what most Borussia Dortmund superstars do - join Bayern Munich.

It is a familiar theme, but the free transfer happened due to BVB playing hardball over the move, despite knowing Lewandowski's contract had just a year left to run. Teary-eyed Dortmund fans had to watch one of the most prolific and sought after strikers in world football join their bitter rivals for free.

Lewandowski went to Bavaria and firmly established himself as one of the most prolific forwards in world football, scoring goals like it's gone out of fashion. The Polish international has won a plethora of individual accolades and team honours in the colours of Bayern, including 5 Bundesliga titles, 6 top scorer gongs in the Bundesliga, 4 German Player of the Year awards, etc

In 260 appearances for Die Roten, the forward has scored 214 goals and delivered 47 assists so far. At the time of writing, Lewandowski continues to dazzle in the colours of Bayern, and he recently smashed a 51-year-old goal Gerd Muller record by scoring 16 goals in his first 11 consecutive Bundesliga games. Ironically he scored the 16th goal against bitter rivals Dortmund.