I said this before, and I'm no genius, but how can they NOT do a deal like this:
SPIDER-MAN SOLO MOVIES
Marvel Studios have creative control with assurances made to Sony (like they won't kill off the character)
Sony & Marvel co-produce the films (percentages TBD)
Disney markets
Sony distributes and keeps distribution fee
Sony & Marvel share in the profits (percentages TBD)
Sony maintains BluRay/DVD/Digital rights
Marvel maintains merchandizing rights
OTHER MARVEL FILMS WITH SPIDER-MAN APPEARING
Marvel Studios have creative control with assurances made to Sony (like they won't kill off the character)
Sony receives a license fee and/or percentage of the profits