The midfielder is confident that the Catalans have the potential to sweep all before them if they perform to their potential, and also praised "natural leader" Lionel Messi
The Catalans have stumbled in recent domestic matches, losing twice in their prior three Liga ties to give Real Madrid and Atletico Madrid the upper hand in the Primera Division title race, and now sit four points off the pace.
They face the Blancos in the Copa del Rey final in April, but are likely to face a tough Champions League quarter-final beforehand.
Fabregas, 26, is yet to taste European glory with the Catalans, after returning to the club he grew up at in 2011, but he believes that there is no reason why they cannot pull off a treble, particularly on the back of their 4-1 aggregate win over Manchester City.
"I was worried that people were being overly critical of the team from all corners, because I see otherwise," the attacking midfielder told Mundo Deportivo. "I see the team wanting to be reborn.
"We will give it everything and the club is very much favoured in all three competitions.
"Yes, I'd rather avoid Real Madrid and Bayern Munich in the Champions League last eight. But then again there's also Chelsea, while Paris Saint-Germain have taken a leap in quality - any opponent are now difficult."
Lionel Messi scored in midweek for Gerardo Martino's men, his eighth goal in five European games this season, and Fabregas thinks that Barca must get the very maximum out of their talismanic No.10 if they are to win silverware this season.
"He is the natural leader of this team and we have to be guided by him," the midfielder added. "We have to make the best of Messi for this team to aspire to every possibility."