Spider-Man is being recast and unabashed Spidey-fan Donald Golver appreciates you campaigning for him. But he's not going to campaign himself.
In an interview with Yahoo he says, "I would always be honored to play Spider-Man," he said. "But I just want the Spider-Man movie to be dope, that’s all I want. I’m leaving it to [the fans]. Campaigning’s part of life, but for me, I’ve got a lot of stuff that I’m really excited about, and dropping it all… of course it’d be an honor. But it’s fine, if it comes, if not.”
Glover did campaign for the role back in 2010. It went to Andrew Garfield. Garfield has since been relieved of his spidey senses. And while Glover is probably even of a higher public profile him, now—thanks to his Childish Gambino persona—he is 31 years old. If Marvel is doing another young Spider-Man story, he probably doesn't look young enough (he's aging very well, though! Tips? Spider web facials?). But if Marvel decides to explore a more grizzled-vet avenue of storytelling (a la DC using an older Batman for Batman v Superman: Dawn of Justice)... eh, who are we kidding? Spider-Man is always going to be a teenager.