3) Villarreal
After being voted the best central defender in the Campeonato Baiano in 2013, a tournament his side also won. His form saw him earn a move to La Liga side Villarreal where he signed a five year contract in 2013.
His contract also has a £15.25 million release clause but the Telegraph’s report earlier today has stated the Gunners are trying to negotiate a fee of around £6m which could rise to £10m in total.