Manchester United have checked on Sarpsborg's 18-year-old forward Krepin Diatta.
The Senegal U20 international is in the Norwegian club's first team and signed a four year contract in February.
United are also among the clubs monitoring MK Dons' 16-year-old forward Dylan Asonganyi.
If either player was to move to Old Trafford, they would add to an already impressive stock of young forwards at the club.
In Jose Mourinho's first team squad alone United boast the likes of Marcus Rashford, Anthony Martial and Romelu Lukaku.