I'll comment now.
Personally, whatever your morals are, I cannot unhear that video.
But even if you could... there's another two stumbling blocks.
First, his conduct professionally outside of this incident has been shown to be questionable to say the least and apparently we have a no-dickhead policy now, supported by a manager who's keen on team morale.
Second, how good is he now after two years out of the game? At best, his development would have stunted, at worst regressed. Even if he gets back to where he was before, will he ever be United level?
If United don't want to let him go just yet (and even if they did for some money), a loan abroad sounds like the most sensible option. We can see if he's still OK as a player and if he's even willing to work on his image.
But, as I said, he has to do more beyond the football side to be allowed back in. He needs to show public remorse and even do an interview on the topic. Else, I cannot see any way for him to be back in the squad and even with that, it'll be steep road.