Barcelona are targeting Chelsea midfielder Juan Mata, according to the Daily Star.
Barcelona are set to sell Thiago Alcantara and Cristian Tello so want Mata as a replacement.
Mata is also seen to be the long-term successor to Xavi - who is turning 34 soon.
Mata could be deemed surplus to requirements after the arrivals of Andre Schurrle and Marco van Ginkel.
New Chelsea manager Jose Mourinho is likely to change the London side's way of playing to a more counter attacking style which the Portuguese manager is known for.
Chelsea used a more possession based game under former managers Roberto Di Matteo, Andre Villas-Boas and Rafael Benitez - which allowed Mata to blossom.
The 25-year-old - who was Chelsea's most important player last season - has made over 100 appearances for Chelsea, scoring 32 goals and providing 59 assists.
Mata has won the Europa League, the FA Cup and the Champions League during his time at Chelsea and is a fans' favourite after last season's performances.
Mata has won one World Cup and two European Championships with Spain, scoring eight goals in 29 caps for his country.
Mata is a top player. Despite his slender size he can glide past players. He also has great vision and is an extremely skilful player who scores great goals.
Mata has the ability to change a game in an instant so selling him would be a huge blow to Chelsea but a massive gain for Barcelona.
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