Pitarch is contracted at Real Madrid until June 2027, giving the club full control of his future for the next 12 months.
Brentford would need to present a convincing developmental argument — the appeal of Premier League football from a young age — to make a compelling case against the status of remaining at one of the world's biggest clubs.
The teenager has previously been linked with Racing de Santander, who return to La Liga next season following their promotion. The Spanish option would keep him closer to home and in the domestic football environment.
Brentford's pitch is the Premier League itself — consistent senior minutes at a club with an established track record of developing young technical players.
Real Madrid retain the upper hand. With his contract running into 2027, any departure requires the club's willingness to sell. Whether the new Jose Mourinho regime regards Pitarch as part of the first-team picture, or as a player to be moved on for a development loan or permanent sale, will ultimately determine how this situation resolves.