Midfielder agrees move to Valley Parade.
Midfielder Billy Knott is set to join League One side Bradford City.
Knott, 21, will join the Bantams on July 1 when his contract with Sunderland expires.
He has signed a two-year deal with an option for City to extend the contract by a further year.
After joining Sunderland in the early stages of the 2010-11 season, finishing the campaign as the youth team’s top scorer.
Knott also had loan spells at AFC Wimbledon, Woking, Wycombe and Port Vale, making a combined 82 appearances and scoring 15 goals.