He is arguably the most valuable IP that Sony still holds, and losing him might make the sale of Sony/Columbia Pictures more difficult.
Unfortunately, Disney may very well not be interested in purchasing all of Sony Pictures, and the more likely scenario is that Spidey will stay with Sony and whichever new owner takes charge.
For those who missed the news, The Emoji Movie is scheduled for a release this August and is set to star Shakespearean actor Sir Patrick Stewart as the Poop Emoji.
This provides an even more troubling scenario, a change of leadership that might not be as keen on sharing the rights of Spider-Man.