He got a 7 match ban in Holland, but it was never fully served because Liverpool bought him.
Can't see how he can have anything less than a 5 match ban (and that's being lenient). People are comparing to when Defoe bit Mascherano a few years back, but at that time the incident was seen and Defoe was booked, so no further action could be taken. This time the incident evidently wasn't seen by the ref, so the FA can (and should) throw the book at him.

It was like watching a 3 year old at nursery school take out his anger on another child - something you kind of expect at that age, but never condone. To see a professional footballer do it!?!? Ridiculous.....