The 36-year-old ended a 13-year stay at Stamford Bridge last season, before agreeing to join New York City FC, but admits he was keen to extend his deal before it expired
The 36-year-old's 13-year spell at Stamford Bridge came to an end last season when his deal with the Blues expired, before agreeing a move to New York City FC via a loan spell at Manchester City.
|33/1||Frank Lampard is 33/1 with Paddy Power to be the next Chelsea boss|
"I would have obviously stayed if Chelsea had offered me another year," he told The Sun. "There was no reason for me to leave. Yes, I wanted to play a bit more regularly but I'm not stupid.
"If Chelsea had given me a new contract it would have been mad not to take it at the time. It wasn't that I didn't think I could still do it. If I felt like that I wouldn't have gone to City on loan.
"I had a chat with Jose Mourinho and both he and the club were always great with me. The decision was made – and I don't know who made it."
Lampard has no hard feelings over his departure and is now keen to show he can still compete at the highest level with City.
He added: "Jose was brilliant about it. I didn't walk out with any bad feelings towards him or the club. I knew things were coming to a head but I'm realistic and, in football, I move on quite quickly.
"I also felt like I didn't want to be a player who faded away – with that being the last memory people had of me. So maybe it was the right time. Maybe it was right that the club took it out of my hands.
"What I really want now is to make a really positive impact in my time at Manchester City and then again in the next stage of my career."
Lampard could face the club with whom he won three Premier League titles, four FA Cups and the Champions League when City take on Chelsea at the Etihad Stadium on September 21.