The Blaugrana have effectively booked their spot in the showpiece event after their 7-0 drubbing of Valencia in the first leg of their semi-final and "will not relent" in their insistence that the final be played in the Madrid stadium, per AS (via Football Espana).
A Catalan source reportedly told the Madrid-based newspaper that the Bernabeu's 90,000 capacity is a big selling point: "As always, we want the stadium with the biggest capacity in order to facilitate the movement of the growing number of fans."
Barca's likely opponents in the Copa's last two are Sevilla after they won the first leg of their semi-final 4-0 against Celta Vigo.
Madrid's position in the centre of Spain does theoretically make the Bernabeu an ideal location should that be the lineup, as it is almost equidistant from Barcelona in the north-east and Seville in the south-west.
However, per Football Espana's report, Real are thought to have told the Spanish Football Federation they will not host the match, and Barca are eager for Los Blancos to explain their reasoning.
Atletico Madrid’s Vicente Calderon and Valencia’s Mestalla have also been mooted as potential venues, although Celta would reportedly have an issue with the latter should they qualify due to its relative proximity to Barcelona.
The final will be played on either May 21 or 22 with Barca looking to claim a second successive Copa having won it last year in their own Camp Nou stadium against Athletic Bilbao.
They will be heavy favourites no matter who they face, with Bleacher Report's Sam Tighe predicting not only another cup victory this year, but another treble triumph for Luis Enrique's superlative side:
However, Sevilla looked good against Celta on Thursday as Kevin Gameiro netted a double, and they will be well-motivated to claim their first Copa triumph since 2010 should they make the final.
The last time the Copa del Rey final was staged at the Bernabeu was in 2013, when Atletico edged an all-Madrid affair after extra time.
There seems a high likelihood that this year will see the final return to Real's storied home, perhaps with their arch-rivals Barcelona claiming victory.