#3 Alex Song
A stream of fine performances for Arsenal in the Premier League propelled Barcelona to sign Alex Song in August 2012 for a £15 million transfer fee.
However the Cameroonian had a hard time acclimatizing to Barcelona's style of play, and in consequence was not up to snuff which saw him move back to the Premier League on a loan switch to West Ham United.
In his two-year stint for the English club, Song made 46 appearances as his 2015-16 season was marred by recurring injury problems.
Having played for Rubin Kazan for 18 months, he is now a free agent since the end of January 2018.
Edited by Anthony Akatugba Jr.