Former NBA star Nate Robinson, who was diagnosed with kidney disease 18 years ago, said he knows he will die if he doesn’t find a kidney donor soon.

“I gotta stick around. I want to stay alive for the next 40 years: be a grandpa, see my kids’ kids, take them to the gym, tell them the stories of when I was in the NBA around ‘Bron and Kob’ and all these guys,” he told Men’s Health magazine in an interview that published Tuesday. “I gotta fight for it.”

Robinson’s kidneys have been functioning…