The 21-year-old has been criticised by Blackpool boss Neil McDonald.
The striker is currently on loan at the League One club.
The Blackpool boss was linked with the Sunderland assistant manager role.
It is believed that Big Sam wants his old friend in the dugout at the Stadium of Light.
Neil McDonald has been confirmed as the new Blackpool manager after leaving West Ham United following the departure of Sam Allardyce.
HITC Sport understands former West Ham assistant manaager Neil McDonald is the frontrunner for the vacant manager's job at Blackpool.
The recently relegated side have narrowed their shortlist to two.
West Ham United assistant Neil McDonald has suggested what the current side need to do to turn their form around.
West Ham United assistant manager Neil McDonald was impressed with Matt Jarvis' display against Arsenal.
West Ham United assistant Neil McDonald has revealed the side's aims have now changed for the season.
West Ham United assistant manager Neil McDonald says that the club are surprised at how good Diafra Sakho has been.