Sergio Aguero is soon set to feature in LaLiga Santander for Barcelona. The Argentine made a huge impact at Atletico Madrid as a youngster, before spending a trophy-laden decade with Manchester City.
But returning to Spanish football after a lengthy spell away has brought mixed results over the years, with some stars finding it hard to readjust while others have gone on to further prosper.
We take a look back at a number of players who return to LaLiga and how they fared, from Diego Maradona to Johan Cruyff.
Maradona donned the Blaugrana of Barcelona between 1982 and 1984, where he showed his quality in glimpses while injuries also prevented him from showing his best self.
After becoming the best player in the world at Napoli, and at the 1986 World Cup with Argentina, he made his way back to Spain with Sevilla but had many problems in getting back up to speed and subsequently returned to his home country at Newell’s Old Boys.
Return rating: 5/10
The great Ronaldo had all the attributes of the perfect centre forward: strength, speed, dribbling and finishing. As a youngster for Barcelona, the Brazilian shone in his one and only season but mismanagement from the board saw him slip from their grasp.
He returned in the most painful way for Barcelona fans, as he joined rivals Real Madrid five years later and starred in the Galactico side for five years more.
Return rating: 7/10
Another great Brazilian striker, Romario was a fans’ favourite at the Camp Nou for two years (1993-1995) but left due to disciplinary issues that would become a theme throughout his career.
He returned to Spain with Valencia, but it was nothing short of a disaster as he clashed with coaches Luis Aragones, Jorge Valdano and Claudio Ranieri, featuring just eleven times in two years at Mestalla.
Return rating: 2/10
His first adventure in Spain saw him revolutionise Barcelona and the competition itself. Cruyff arrived in 1973 when he was the king of world football and left in 1978 after a clash with his coaches.
Unforeseen to everyone at the time was his eventual return to Spain to play for Segunda Division side Levante in 1981 with the aim of getting them promoted to the top flight. Yet after just three months, he left the Valencian club.
Return rating: 3/10
The Basque midfielder joined Rafa Benitez at Liverpool after impressing at hometown club Real Sociedad. He won the Champions League with the Reds before returning to Spain with Real Madrid.
The classy technician was a permanent fixture in Jose Mourinho’s robust team, before Pep Guardiola’s Bayern Munich came calling in 2014.
Return rating: 8/10
The central defender came up through the Barcelona academy but was snapped up as a teenager by Sir Alex Ferguson who took him to Manchester United.
The experience did him a world of good, despite rarely featuring in the Red Devils first team, learning alongside Rio Ferdinand and Nemanja Vidic. He returned to Barcelona in 2008 under Pep Guardiola where he flourished alongside Carles Puyol and has gone on to become a legend of the club.