The New York City FC midfielder will compete directly with his former club of 13 years for the Premier League title next season after agreeing to join the champions on loanPOLL
Frank Lampard spent 13 years as a Chelsea player, scoring 211 times in all competitions to become the club's all-time top goalscorer while winning three Premier League titles and the Champions League.
Next season he could add a fourth league winner's medal, but as a Manchester City player.
|MAN CITY LATEST
|66/1||Frank Lampard is 66/1 with Paddy Power to be named PFA Player of the Year|
City beat Chelsea to the title by four points last season, with Liverpool also placing ahead of the west London club, and the title races promises to be even closer this time.
Jose Mourinho has added Cesc Fabregas to his squad to replace Lampard and signed Atletico Madrid duo Filipe Luis and Diego Costa. Thibaut Courtois also returns from a loan spell with the Spanish champions.
Lampard, meanwhile, becomes City's fourth signing of the summer following the arrivals of Fernando, Bacary Sagna and Willy Caballero, with Eliaquim Mangala likely to follow.
Manuel Pellegrini's team host Chelsea on September 21 but Lampard is expected to have returned to New York before the return clash at Stamford Bridge on January 31.
Does Lampard's decision to join Manchester City affect his standing as a Chelsea legend? Or do the 36-year-old's achievements with the Blues ensure his legacy is safe?
Let us know your thoughts in the comments section and have your say on our Twitter and Facebook pages.