Despite a strong start in the Premier League, Nuno's side currently sit with 15 points from 10 matches, their fifth defeat coming against Manchester United at the weekend.
While the North Londoners are only two points adrift of fifth position, supporters have been left frustrated with just nine goals coming during that period.
With no positive resolution found, the report claims that the Portuguese will be relieved of his duties over the coming days.
Mason, who is seemingly in line to take charge until Christmas, posted four wins and three defeats from his seven games in the same role last season. body check tags ::