In 2014, Cesc Fabregas, a former Barcelona player who had left to pursue a league championship with Chelsea, was persuaded to return to the Premier League by former Chelsea manager Jose Mourinho.
It turned out to be an inspired move by the Portuguese manager, with the former Arsenal starlet eventually making 198 appearances for the Blues across four and a half seasons and registering 80 goal contributions in the process.
He even won two league winners medals at Stamford Bridge as they proved elusive at Arsenal and there is no doubt his spell at Chelsea was fruitful.
Could Mauricio Pochettino repeat their Fabregas masterclass by securing a deal for another creative Spanish midfielder?
What are the latest Chelsea transfer rumours?
Celta Vigo gem, Gabri Veiga, was initially linked with Chelsea back in June, as Pochettino aimed to sign a new attacking midfielder to take over the reins from Mason Mount, who soon departed for Manchester United.