Not knowing exactly what is meant by "common assault", I've just looked it up. Apparently it's when "one person causes another to apprehend or fear that
force is about to be used to cause some degree of personal contact and possible injury" (
https://en.wikipedia.org/wiki/Common_assault). So nothing to say he actually even hit her.
The Chelsea incident was stupid, sure, but it sounds like a prank that went too far.
Seriously? If we're going to start condemning footballers for hanging around with unsavoury characters, there's going to be a lot of players we'll want to avoid.