#3 Petr Cech to Arsenal
Petr Cech is statistically the best goalkeeper to have graced the English top flight with a record haul of 202 clean sheets to his name. Ever reliable between the posts, Cech enjoyed 11 successful campaigns with the Blues. He eventually moved to Chelsea's Premier League rivals across London.
During his tenure at Stamford Bridge, Cech was almost an immovable object for the opposition attackers. The goalkeeper won 16 major trophies at Chelsea. This includes four Premier League titles, four FA Cups and one Champions League, among other notable accolades.
Cech signed for Arsenal in 2015, spending four years at Arsenal and winning the FA Cup title in 2017.
#2 Frank Lampard to Manchester City
Undoubtedly, Frank Lampard was a legendary player for Chelsea. The midfielder boasts a mammoth haul of 211 goals and had 150 assists under his belt for the Blues. This is a testament to the midfielder's caliber.
Lampard's 13 seasons at Chelsea were trophy laden. He won three Premier League titles and one Champions League, among other notable accolades. The Englishman was a terrific playmaker with a penchant for scoring screamers from long range.
Lampard featured for Manchester City for a single campaign following his final season at Chelsea. The midfielder made the move to MLS side New York City FC in 2014 as a free agent in the summer.
However, the move was filled with controversy. Manchester City, the parent club of New York City FC, decided to secure Lampard's services on a six-month loan deal. They extended the loan period which saw Lampard miss the entirety of the 2015 MLS season.
Lampard was on the scoresheet when Manchester City faced Chelsea but he didn't celebrate as a sign of respect.
#1 Juan Mata to Manchester United
The sole reason why Juan Mata is at the top of the list is due to the fact that he was at his peak when the transfer to Manchester United took place. It was a bizarre decision from the Chelsea hierarchy as Mata was awarded the Blues' Player of the Year award twice in 2012 and 2013.
During his brief tenure at Stamford Bridge, Mata was the standout performer in the team. The Spaniard went on to score 32 goals and rack up 58 assists for Chelsea. He was skilled at dislodging opposition defenses at will with his immaculate passing and vision.
Mata has spent seven years at Manchester United since his move in 2014, scoring 51 times for the Red Devils.