#5 Jordi Alba
A telepathic relationship with Lionel Messi is an excellent recipe for success at Barcelona, and Jordi Alba seems to understand the Argentine better than anyone else on the pitch.
The second player on this list to return to FC Barcelona after a La Masia education and a spell away from Catalunya, Jordi Alba arrived at the club from Valencia for a fee of €14 million. The marauding left-back has gone on to become a permanent fixture in Barcelona's defensive setup, and for good reason.
The young Spaniard made his presence felt with Valencia in the 2011-12 season, before exploding on to the scene with Spain's world-beating squad in the European Championship in 2012. An incredible winger's goal against Italy in the final caught Barcelona's attention, and the club brought their former youth product back home as a long-term replacement for Eric Abidal.
Nicknamed 'El Ferrari', Alba's sheer pace is difficult to handle, particularly on the overlap. Alba is usually the furthest forward on pitch for Barcelona and his teammates reap the rewards more often than not. Alba has recorded an impressive 48 assists during his time at the club.
Jordi Alba has been a major part of Barcelona's trophy victories this past decade. He has been an undisputed starter in the team for several seasons and is widely regarded as one of the best left-backs in the world.
Age may be catching up with Jordi Alba, but the opposition certainly isn't.