The 18 year-old comes off contract at Spurs today.
A highly rated left-back, Hackett will move to Newcastle on a free transfer, says The Sun. He had a successful trial at the Magpies prior to making his move permanent.
Hackett has played for England at Under-15, 16 and 18 level.
He also featured 11 times for Spurs in the Under-18 Premier League but started less than half of the games last season.