Real Madrid made many Castilla sales over the course of the summer transfer window, with the academy emerging as a major source of income for the club.
The sales, in turn, allowed Los Blancos to invest that money towards improving the first-team squad at Jose Mourinho's disposal.
Florentino Perez brought in as many as six players in the market for the first team, with Yan Diomande emerging as their record acquisition.
Now, according to AS, one Castilla player who chose patience over an early exit from the club was 19-year-old Joan Martinez.
The central defender had several offers to leave the club this summer but decided to stay with Castilla and push for a first-team berth.

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