The thing I find interesting about it is that its obviously not just us fans who think he is biased, Babel isnt going to be alone in thinking or saying it, he's just voiced publicly what fans have been saying for ages and clearly players as well. If anything it should put Webb in a tight position, he shouldnt be allowed to ref man u games again if this suspicion is hanging over him, its now so blatent that players believe in the bias as well, if even one player believes it then he cant effectively do his job.
They'll say its bringing the game into disrepute.
There wont be an investigation, it will be calling into question a refs integrity. If they investigated they would find that there was some truth to it, that Webb is biased to man u, particularly at Old Trafford, they cant risk that, so it will just be a charge for Babel and told to shut up and not do it again. Standard charge that others have been done for, should think he will get a fine and have to apologise.
I wouldnt though if I was him, fuck em, a fine, go ahead its fucking pocket change. I'd carry it on and say the stats dont lie when it comes to his performance, he is consistently biased to man u, I'd make sure that baldy twat doesnt ever ref another match for them, that every time it was on the cards this is what would get brought up, making it impossible for him to do it or if he did he would have to be a draconian bastard with the rule book over them so that no one could claim he was dodgy, which would be fun to see.
In all likelyhood though Babel will be a good boy and say sorry, I'd wait in that case if I was him, he isnt going to play in this country forever, soon as I was out of their reach I'd do a facetwatter splash calling them for everything telling the truth and fuck them, let them come and get me if they think they can.