Manchester United are stepping up their scouting network across Argentina.

TyC Sports reports United management are still bristling after losing former River Plate striker Julian Alvarez to Manchester City over 18 months ago.

Instead, United have now identified quartet Franco Mastantuono, Aaron Anselmino, Ian Subiabre and Tomas Parmo as potential targets.

River Plate mdifielder Mastantuono, 16, recently played and scored for the senior team. Fellow 16 year-old Parmo is a promising midfielder from Independiente.

Subiabre, a 17-year-old winger, has just broken into River's senior team and defender Anselmino, of Boca Juniors is also being watched.