Jaylen Brown found a gym wherever he went — including Egypt — this summer

Jaylen Brown in Egypt. –Courtesy of Jaylen BrownEverywhere he traveled this summer, Celtics forward Jaylen Brown brought a basketball.

“Just to have it in my hands, feel it, touch it,’’ he said. “Just to be a part of it.’’

At 22 years old, Brown was a globetrotter in the offseason. He started in Egypt, after receiving an invitation from Omar Alaa Mubarak, the 19-year-old grandson of the country’s former and longest-serving ruler. When the pair met during Paris Fashion Week last year, Brown was skeptical about Mubarak’s identity.

“He was telling me, ‘I run Egypt,’ and I was like, ‘Yeah, whatever, bro,’ ’’ Brown said.

But Brown took Mubarak up on his offer, flying to Cairo with his brother,…