Lookman, 20, had been tipped to establish himself in the Premier League for Everton and push on for a senior national team role under Gareth Southgate this season after an incredible loan spell in the Bundesliga last season.
"An announcement will be made soon, I'm close to his management and they have confirmed that he has made the decision," a source confirmed with Nigerian news outlet Pulse, that Lookman has turned his back on England.
The Nigeria Football Federation have intensified their efforts to convince players of Nigerian descent to commit their international futures to the Super Eagles.
Benfica right-back Tyronne Ebuehi along with Premier League duo Alex Iwobi and Ola Aina have been some of the recent success stories in their new initiative led by head coach Gernot Rohr.
While Chelsea striker Tammy Abraham rejected the chance to represent the African giants after meeting with the NFF President Amaju Pinnick.