The Spaniard, who spent eight years in North London before joining Barcelona in 2011, also played at Stamford Bridge for four seasons after a short spell in Spain, helping the club secure Premier League and FA Cup glory.
But despite his affiliation with both teams, Fabregas has suggested he would rather see Arsenal win tomorrow's final at Wembley as they have "nothing at the moment."
"Arsenal need it more. Chelsea basically every year has won a trophy, so it's a different animal in this case," Fabregas told the Daily Telegraph.
"In terms of trophies, Arsenal needs it more and for confidence for next year and getting into Europe. Chelsea are in the Champions League and Arsenal has nothing at the moment."
In the interview, Fabregas also spoke about the mentality of both teams during his time at the clubs, pointing out how Chelsea were "ruthless" in their ways.
"Some teams I played in at Arsenal and Chelsea were similar in terms of talent, but the difference I felt straightaway is that at Chelsea we were ruthless," he said.
"At Arsenal there were fantastic, top, top players, but at Chelsea we didn't really care if one day we had to win 1-0 by not touching the ball for the whole match.
"At Arsenal, and it was maybe partly my fault at some point as the leader and captain that I was, sometimes we forgot that to win leagues and Champions Leagues, you need to win ugly.
Cesc Fabregas interview: 'When I was at Arsenal I never thought I could feel this way about Chelsea' ' @Matt_Law_DT https://t.co/UkCSe3FyKB
- Telegraph Football (@TeleFootball) July 30, 2020
"When I was young I always wanted to play the beautiful game, but there are always five or six games a season that you need to struggle but win.
"At Chelsea we did that. We were very competitive and very experienced. That's the main difference."
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Featured Image Credit: PA
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