Leon striker Jose Juan Macias is interesting Manchester United.
Marca says United are keen on the 20-year-old, though face competition.
Macias, who plays his football for Liga MX club Len on loan from Guadalajara, is also being watched by Koln and Real Betis.
Macias has been capped by Mexico but has impressed for his country's Under-21s outfit of late.
A move to Europe in January is being mooted.
