Guardiola and Mourinho are considered as two of the best managers of this generation and Fabregas was lucky enough to have worked under them.
Fabregas returned to his boyhood club Barcelona before the 2011/2012 season and quickly won the Club World Cub, Supercopa de Espana and Copa del Rey in his first season under the tutelage of Guardiola, before the Spanish coach left Camp Nou for a 12-month sabbatical.
Fabregas has admitted he has not spoken to Guardiola, who is now the head coach of Manchester City, since he left Catalonia and insists he is disappointed with his compatriot.
“No, no, with Pep nothing at all,” the 33-year-old replied when asked if he's been in contact with Guardiola at all over the past eight years
"I don't know if the disappointment with Pep is mutual. Things happened, but I prefer not to talk about it. Pep was my idol since I was a child. It is from him that I have learned the most, perhaps, since I was four until now."
Fabregas eventually joined Chelsea from Barcelona after the 2013/2014 season and quickly established himself as one of the best players under his onetime foe Mourinho.
The former Arsenal man has lauded Mourinho, who is currently plying his trade as Tottenham Hotspur manager, as the reason why he rediscovered his form.
"Mourinho inspired me the most when I left Barca," Fabregas added.
"He told me that we had had our issues on the pitch when he was at Chelsea and I was at Arsenal and then when he was coaching at Real Madrid and I was at Barcelona, but that for him, it all ended there. We turned the page.
"He told me about his project. I had to go where I thought I would do best, the decision was mine and it didn't depend on what people said.
“I prioritised the professional [aspect], and today I still write to him and I consider him a friend.
"He helped me a lot at a difficult time in my career and perhaps I played one of my best seasons with him."
