Is John Cena Playing Sandman in Upcoming Spider-Man Movie?

We know he’s playing Peacemaker in the upcoming DC Suicide Squad sequel, but WWE icon John Cena could be vying for a role in the Marvel Cinematic Universe.
The 16-time world wrestling champion reposted some fan art on Instagram, showing him as the Marvel villain Sandman preparing to squash Spider-Man with his sandy hand-hammer.
While Cena offered no pic caption, his post seems to suggest he’d be up for playing Marvel’s sandy supervillain.  Fans commenting on the pic are hoping that Cena shows up for Tom Holland’s third movie as Spider-Man.  No villains for the film have been named…yet.
Which role would Cena be better for; DC’s Peacemaker or Marvel’s Sandman?