It was certainly a controversial transfer, taking into account that the 28-year-old had been a legend and icon at the Blues' fierce rivals Arsenal for much of his earlier career.
At the time of his signing for Chelsea there were plenty of questions asked regarding why Arsene Wenger didn't approach the player, and why Fabregas would ever consider joining another London team in the first place.
Though Gunners fans won't have liked it, Fabregas won his first Premier League title in his debut season at Stamford Bridge, as well as the League Cup. In the Spaniard's entire eight-year career at Arsenal, he was only able to win one FA Cup.
However, the Gunners are a growing force again, and added their own piece of silverware this season when they added their a successive FA Cup.
We'll never know whether Arsenal may have been the ones lifting the league title if they would have had their former captain back in central midfield rather than elsewhere in London, but Wenger will continue to move forward with the midfield quality he already has at the Emirates, because Fabregas certainly seems to have moved on.