Arbeloa arrives at Craven Cottage following the departure of Marco Silva at the end of last season.
While his spell in charge of Real Madrid ultimately proved to be a step that came slightly too early in his managerial career, Fulham were impressed enough to move quickly once his name was put forward.
Flashscore understands the Premier League club carried out extensive checks on Arbeloa's personality, coaching methods and suitability for the role before deciding to proceed with his appointment.
Sources have told Flashscore that senior figures at Real Madrid actively endorsed Arbeloa during the process, making contact with individuals within Fulham to speak positively about his qualities as both a coach and a leader.
It is understood Mourinho is among those to speak highly of the appointment.
The belief within Madrid remains that Arbeloa has a bright future in management despite the challenges he encountered during his first senior role.
Flashscore understands the Spanish giants view him so highly that they would be open to bringing him back to the club in the future, should his development continue on an upward trajectory.
There is an acknowledgement that Fulham's appointment carries an element of risk. Arbeloa has limited experience at senior level and was unable to deliver the success expected during his season in charge of Madrid.
However, there is confidence among those close to the situation that the move could prove to be an astute one, with Fulham believing Arbeloa's coaching philosophy and long-term vision are well suited to the club.
The relationship with Real Madrid could also bring benefits in the transfer market.
Flashscore understands discussions have already mentioned the possibility of potential players Fulham could target from the Spanish club, with Madrid open to helping Arbeloa strengthen his squad where appropriate.
Among the names to have been mentioned at this stage are believed to be highly rated teenager Franco Mastantuono and Spain Under-21 forward Gonzalo Garcia, 22.
While no formal negotiations have begun and any potential deals remain at an early stage, both players are understood to be on Fulham's radar as the club begins planning for the new season.
Whether either move materialises remains to be seen, but Fulham's growing connection with Real Madrid could prove to be one of the more intriguing storylines of the summer transfer window.
Dean Jones is a transfer news and football insider for Flashscore, since 2025. He has been a journalist on leading UK newspapers and websites over the past 20 years, establishing himself as an authoritative and trusted voice in the industry.
