While his long-term future at Manchester City is the subject of some uncertainty, Pep Guardiola was more emphatic when it came to a potential reunion with Barcelona.

"It's a door that is closed," he told reporters Monday.

Guardiola spent more than a decade at Barcelona as a player and helped the club win three LaLiga titles and two Champions League trophies as a manager.

The 53-year-old referenced the challenges that come with coaching Barcelona.

"The Barça bench is one of the most complicated because you have to manage many cases," he said. "In Manchester everything we do remains inside and at Barça, everything comes out."

Even with Barcelona becoming the best club in the world and revolutionizing the tactics of world football, the extent to which the stress of the job steadily wore on Guardiola was evident in how much he seemed to physically age.

Guardiola, despite his deep ties to Barça and his Catalan roots, wasn't immune from the backroom politics that doomed managers before and after him at Camp Nou, either.

It's little surprise he wouldn't want to sign on for that experience again.

In addition, the general state of Barcelona has made this job a lot less attractive that it was during the height of the Guardiola era.

Club president Joan Laporta will eventually run out of "economic levers" to pull and his short-term measures to balance the books only make the future more perilous. The club also has one solitary semifinal appearance in the Champions League over the last nine years, a sign of how much it has fallen behind the curve relative to is continental peers.

For now, former Bayern Munich and Germany coach Hansi Flick faces the difficult task of returning Barcelona to the pinnacle of LaLiga.

"I wish him the best of luck in the world," Guardiola said.