I think it's clear that Godfrey didn't expect his opponent's head to be there. He did see that Tomiyasu was falling but then looked away while Tomiyasu was still falling. If he meant it, it's impressive anticipation and accuracy. Godfrey's immediate reaction after the contact also suggests that it took him by surprise. Again, if he meant it, great acting.
Here, a yellow card might be appropriate for acting without due regard to the danger to or consequences for an opponent. It's certainly not serious foul play or violent conduct.