Arsenal are set to formally contact Pro Ref — the body responsible for overseeing refereeing standards in English football — to dispute the penalty awarded to Sunderland during Saturday's Premier League encounter at the Stadium of Light, a source has told ESPN FC.

The Gunners are dissatisfied with the officiating decision and intend to raise their concerns directly with the governing body for match officials.

Pro Ref holds authority over referee appointments and conduct in English football, making it the appropriate channel for clubs wishing to challenge officiating decisions in the Premier League.