The Jamaican-born forward has been caught disobeying the rules again, after he was allegedly being pictured smoking a shisha pipe.
The 20-year-old star, who has a history of misbehaviour had a protection team set up for him earlier this year to help prevent mishaps such as this.
He was joined Manchester City from Liverpool in the summer for a large sum of £49 million, which made him one of the most expensive English players in history.
The Sun, reported that Sterling was seen exhaling smoke at the Marina Lounge in London on Saturday night. They also reported that while still playing for Liverpool, Sterling was caught inhaling nitrous oxide.