Adam Johnson has been sacked by Sunderland after pleading guilty to one count of sexual activity with a child and one charge of grooming. The 28-year-old footballer’s contract was terminated hours after he was dropped for Saturday’s Premier League match against Manchester United. He will stand trial on Friday on two further counts of sexual activity with a child, which he denies. Sportswear firm Adidas has cancelled its contract with the midfielder. After Johnson’s arrest in March 2015, the club suspended him, but then lifted the ban following talks with his representatives and the Professional Footballers’ Association.