The Red Devils are one of 12 clubs who committed to join the new competition, with several of those other participants now preparing to back out.
Manchester United executive vice-chairman Ed Woodward has resigned and will step down at the end of the year, the club has announced.
Woodward was one of the driving forces, along with owner Joel Glazer, behind the controversial European Super League which has been widely condemned.
Goal understands that his resignation is not to do with the reaction to United’s involvement in this competition and he will still remain in his role until the end of 2021 – however the announcement of Woodward’s departure comes just two days after the Super League announcement, and amid fierce backlash.