Abraham was attacked by angry Katsina United fans shortly after Orji Kalu pulled an equaliser for Barau Football Club in the 69th minute.
Nigeria broke the deadlock in the 37th minute after a Ghanaian defender handled the ball inside the area.
Just as Tottenham thought they had nailed the victory, de Ligt headed home a corner kick from Bruno Fernandes to secure a draw for Man United.
Nigeria will take on Gabon in the first semi-final of the mini tournament on November 13 at Complexe Sportif Prince Heritier Moulay Al Hassan in Rabat.
The VC said, “Sports is not a do-or-die affair. Participating in competitions brings joy, happiness, unity, peace and love among athletes.’’
Some football enthusiasts said that inadequate security for match officials has become a major challenge in the league.
The matchday saw Chelsea held to a 2-2 draw by newcomers Qarabag FK, while Pafos FC shocked Villarreal with a narrow 1-0 victory.
The week-long event has attracted strong interest as rising stars battle for ranking points and honours.
Meanwhile, 10-man Bayern Munich got a hard-fought 2-1 away win over defending champions Paris Saint-Germain.
The tournament provides a platform for young athletes to showcase their skills.
