Entertainment Weekly:

Despite his desire to lie low and explore London, Prague, and Venice with his friends, Nick Fury (Samuel L. Jackson) recruits him to help battle a mysterious quartet called the Elementals, who can manipulate nature. Since Peter doesn’t want to expose his secret identity by gallivanting around Europe in Spidey’s tights, Fury lends him an all-black stealth suit. (“It kind of looks like Black Widow — maybe it was one of her suits and they just tailored it," Watts quips.)

Fury also connects Peter with a new ally: Quentin Beck, a.k.a. Mysterio, a powerful magician played by Jake Gyllenhaal. “If Tony Stark was sort of the mentor in the previous films, we thought it would be interesting to play Mysterio as almost like the cool uncle,“ Watts says.

Interesting angle for Mysterio. Definitely adds to my “that’s not really Fury" theory though.