United boss Louis van Gaal later made to pull the hair of a Sky interviewer when questioned, saying: 'When you see what Huth is doing to Fellaini, that's a penalty.
Bizarrely he added: 'Shall I grab you by your hair? What is your reaction when I grab your hair?
'Your hair is much shorter than Fellaini but when I do that, what are you doing then? It's a normal reaction.
'Every human being who is grabbed by the hair, only with sex masochism, then it is allowed but not in other situations.
'Huth was the guy who grabbed the hair of Fellaini. I think the reaction of Fellaini is like a human being. He is always like that.'
The Huth-Fellaini clash was missed by the officials but retrospective action for violent conduct could see the FA issue three-match bans.
Sky pundit Graeme Souness said: 'There is a bit of a tangle and I tell you what, Huth is lucky as well as Fellaini. I say Huth is lucky because he (Fellaini) has caught him under the chin.
'If that catches him full square across his face, then he's lost several teeth or broken his nose and I don't think he can stay on the pitch.
'In that respect, he is lucky, but Fellaini won't escape a ban for that. I just can't see it.'
Leicester midfielder Danny Drinkwater will miss Saturday's clash with Everton after being sent off for two yellow cards.