In two spells at Stamford Bridge, Brazilian defender Luiz helped the Blues win the Premier League, Champions League, FA Cup and Europa League.
The 32-year-old was sidelined by new supervisor Lampard, nevertheless, and Chelsea agreed to promote him to Arsenal in August for £8million.
Discussing his transfer from west to north London, Luiz instructed Brazilian journalist Mauro Cezar: ‘I all the time favored Chelsea, little doubt.
‘A brand new second has are available in my profession, a brand new cycle the place I’ve had the chance to maneuver to a different main membership, pursuing ambitions to win titles.
‘I noticed a risk of writing a brand new story in a brand new place, however I’m ceaselessly grateful to Chelsea, to all folks, to friendships which can be for life.
‘I get messages to this day from everyone at the club because what I had there was true.’
Asked to clarify his motivation for leaving Chelsea for Arsenal, Luiz added: ‘It was a person resolution made by trustworthy dialog – between me and Frank Lampard, nobody else.
‘We had a different idea of the future of the game and that’s why I selected to take a brand new path.
‘It’s all the time very tough due to the rivalry, however I made the choice to depart Chelsea even before receiving Arsenal’s bid.
‘As soon as I decided to leave Chelsea – after a few days – Arsenal’s proposal got here, and because it was one other nice membership, I didn’t suppose twice.
‘It’s onerous for rivalry, sure, however I couldn’t assist however reside a brand new story, in a brand new place, in a giant membership simply due to the rivalry.’
Luiz’s Arsenal face Bournemouth on Sunday whereas Lampard’s younger Chelsea aspect journey to Southampton.