The Brazilian has enjoyed another stellar campaign personally at the Nou Camp but Barcelona are struggling to keep up with their rivals Real Madrid on the pitch.
Madrid currently lead Barca by three points at the top of La Liga and Neymar’s side are facing a Champions league quarter-final exit after a 3-0 hammering by Juventus on Tuesday.
And Spanish publication Don Balon claim the 25-year-old is growing frustrated that could see him push for an exit.
Neymar is under contract with Barcelona until 2021 Neymar's next club: Which sides are tipped to sign the Barcelona ace? Sun, April 2, 2017
Which clubs are tipped to land Barcelona ace Neymar? Odds provided by Paddy Power
Play slideshow Getty Images 1 of 9
Which clubs are tipped to land Barcelon's Neymar? Odds provided by Paddy Power
The report suggests Mourinho has made contact with Perez regarding Neymar as the Portuguese boss is thought to be keen on luring him to Manchester United.
Perez and Mourinho have maintained a relationship following the 54-year-old’s stint in the Spanish capital.
And it seems Mourinho has given his former boss a heads up that Neymar’s growing unrest at Barcelona could see Madrid handed a huge boost if their star player leaves.
Jose Mourinho is a long-term admirer of Neymar PFA Player of the Year nominees 2017 Thu, April 13, 2017
Express Sport brings you the Men's PFA Player of the Year nominees for 2017
Play slideshow Chelsea FC via Getty Images 1 of 6
Eden Hazard (Chelsea)
Get Quotes on Home Insurance
Don Balon claim Mourinho still has tabs on the attacker with the club in contact with his father.
They add United would be able to afford his £173m release clause with Neymar under contract at Barca until 2021.