Nothing will happen, if anything this sells another undeserved rematch. If it wasn't clearly emotionally charged, I would even entertain the conspiracy theory that this was all staged because McGregor had nothing for Khabib and there was no reason for a rematch.
- Videos show that Conor McGregor and Dillon Danis actually threw the first punches (of course, they were just defending themselves but it's important to take note)
https://twitter.com/twitter/statuses...19503121891330
https://twitter.com/twitter/statuses...12183793127424
- Conor jumped in the Bellator cage post fight and started attacking fighters and the ref, UFC did nothing about that
http://www.espn.com/mma/story/_/id/2...g-bellator-187
- Conor attacked a bus full of people cutting weight, injured people and got three UFC fights cancelled, UFC did nothing about that
https://www.mmanytt.com/latest-news/...egor-incident/
- Many people have jumped the fence before, so that is also nothing new
The UFC is of course trying to spin this as a tragedy but behind closed doors, they're celebrating. Khabib is now a star. Even if they wanted to punish Khabib, their past actions set precedents and basically make it almost impossible to do anything without being called out for obvious double standards. My guess is they will bury this as soon as possible and use the footage to sell a rematch and any followup fights just like they did with the trolley incident.