According to journalist Matteo Moretto, the Portuguese head coach has asked the club to halt negotiations over the forward's future until he can personally assess his place in the first-team squad. Mourinho believes Garcia possesses qualities that could suit his project and wants to study the situation closely before any final decision is made.
Garcia's performances and progression through Real Madrid's academy had attracted interest from several clubs in recent weeks. Mourinho's intervention, however, has changed the picture entirely, putting any near-term agreement on hold.
Sources close to the player are said to be remaining calm and waiting to see how things develop, aware that interest from a coach with Mourinho's track record could open up a significant opportunity for Garcia's career at the Bernabeu.
For now, talks over a possible exit remain frozen while Mourinho takes the time he needs to reach a definitive verdict.
What had looked like a fairly straightforward departure has instead turned into a situation defined by uncertainty, with Mourinho now the central figure in determining what comes next for a forward who, only weeks ago, appeared destined to leave the club this summer.
Garcia made his breakthrough into Real Madrid's first-team picture last season, with his performances for the club's academy sides convincing several suitors that he was ready for a bigger role elsewhere. The forward's situation now mirrors that of several other young players at Real Madrid whose futures have been complicated by managerial changes, with new arrivals often reassessing internal options before committing to outside recruitment.
Should Mourinho ultimately decide Garcia has a future under him, it would represent a significant boost for a player whose path to regular first-team football had appeared blocked by the club's array of attacking options. Should the coach instead conclude that a loan or permanent exit remains the better route, the frozen negotiations would simply resume from where they left off, with the delay having cost the player little beyond a few additional weeks of uncertainty over his next move.