Chelsea and Barcelona are two of the most followed and most successful football clubs in European football. Founded in 1905, the Blues have won the league title on six occasions and the UEFA Champions League once. They are the 2016/17 Premier League Champions and possesses a great squad at the moment.
On the other hand, founded in 1899, the Catalan giants have dominated both La Liga and European football during various seasons in the past. They have won 25 La Liga and five UEFA Champions League titles in their illustrious history. Barcelona are the 2017/18 La Liga Champions and has one of the strongest squad in European football right now.
Barcelona and Chelsea have a history of players switching allegiance between them. Though some are not direct transfers involving these two clubs, until now, 13 footballers have played for both Barcelona and Chelsea. Players like Ricardo Quaresma, Oriol Romeu, Boudewijn Zenden, Emmanuel Petit, and Mark Hughes have played at both Stamford Bridge and Camp Nou.
The Spaniard takes the No.1 spot on the list because of his sheer quality and the impact he created at both the clubs. A product of La Masia, Cesc Fàbregas moved to the Premier League with Arsenal when he was only a teenager. He had a hugely successful career at Arsenal where he played 212 Premier League games.
He made his move to Barcelona in 2011 and went on to play 151 games for the Catalan side. He stayed at the club for three years and helped them to a La Liga title during the 2012/13 campaign. He then moved back to the Premier League in 2014, but this time with Chelsea.
The 31-year-old has played 184 games for Chelsea in all competitions so far. Cesc Fàbregas led Chelsea to two Premier League titles during the 2014/15 and 2016/17 Premier League campaigns.