The midfielder has revealed the strength of his affection for the club and how he always yearned to play alongside those he grew up with as a teenager
The midfielder came through the Blaugrana's famed La Masia youth system but left for Arsenal aged 16 having never made a first team appearance.
However, he re-joined the club in 2011 and then resisted the advances of Manchester United last summer to continue playing for the team he has supported all his life.
The 26-year-old told UEFA.com: "I wanted to play for the best club in the world and with lads who I had shared my time with as a teenager and who I had also enjoyed playing alongside in the national team, just fantastic people – the club of my life."
Barcelona takes on Manchester City in the second leg of its last 16 tie Wednesday and go into the game with a 2-0 lead from their first encounter at the Etihad.
While many of the current Barca side can boast Champions League medals on their resumes, Fabregas is yet to lift the prize, and he admits success in Europe remains a primary goal.
"Playing for Barcelona, you're aiming for it all every year, because of the players you have there and everything the club represents at international level," he said. "You know you have to fight for every title – that gets into your head pretty quickly when you play for Barcelona."