I dont think Crash or Sony buying the crash IP is happening.
Bish from neogaf said, "Crash ain't walking through that door"
And then there's this from 2 days ago:
"On Crash Bandicoot, Naughty Dog said that it’s ‘not likely [because] Activision owns Crash,’ putting a definitive end to all the speculation surrounding the property."
http://gamingbolt.com/naughty-dog-talks-uncharted-collection-the-last-of-us-and-crash-bandicoot-on-ps4