West Ham United are reportedly interested in Sunderland striker Jermain Defoe.
Newcastle United are in the Championship at the moment, while Sunderland are in the Premier League.
Sunderland lost against Stoke City in the Premier League at the weekend.
Former Birmingham City manager Gary Rowett and ex-Crystal Palace boss Alan Pardew are in the running.
Mike Phelan took charge of Hull City in the summer following the departure of Steve Bruce.
Sunderland failed to win against Liverpool at the Stadium of Light in the Premier League on Monday.
Sunderland lost against Swansea City in the Premier League at the weekend.
Swansea City and Sunderland will face each other in the Premier League this weekend.
Could Watford get relegated to the Championship?
Sunderland are struggling for survival in the Premier League at the moment.