The 23-year-old admits he is drawn to Barca, having supported the club for his whole life, but says a recent conversation with Arsenal manager Arsene Wenger has left him in doubt as to where his future lies.
"I'm a Barca fan, I'm a socio, as is my grandfather, my uncle, my cousin... I have felt the colours from a young age, I'm Catalan," Fabregas said in an interview to magazine DIR Emotions.
"However, I'm the captain of Arsenal, I'm a Gunner, and I have become a player there and matured as a person."
During that time, Fabregas has grown up under the tutelage of Wenger and the Spain midfielder says the Arsenal coach is like a second father for him.
"He is a second father for me, the most important person in my life after my father. He has behaved really well with me and taken me in like a son. I am part of his family," he said.
"He doesn't want me to leave. And in my last conversation with him in London, it was one of the most difficult moments I have experienced. I ended up very upset."