Four English clubs were represented at Real Madrid Castilla's thumping of Deportivo B last weekend.
Arsenal, Tottenham, Leicester City and Fulham all had scouts in the stands to see Real centre-forward Alvaro Morata net a hat-trick.
Morata has now struck ten goals in 16 games for the Castilla and attracted an enquiry from Manchester United last month.
The striker could become available at Real with on-loan Manchester City centre-forward Emmanuel Adebayor keen to sign permanently with the Spanish giants.
