Chelsea forward Raheem Sterling has said he "couldn't afford to waste time" by staying at Manchester City.
After seven years at City, Sterling wanted a "fresh challenge" and made a £50m move to Chelsea last month.
"Since I was 17 I've been a regular starter, and to get to the peak in my career, not to be playing regularly was something I wouldn't accept," he said.
"My personality is to try to fight and change the scenario, but it didn't come and that was it.
"As a person you strive to achieve, and I just felt my time at City was getting limited on playing time for different reasons.