Best we can hope for is that it tightened on him, but looking at the photo of him sitting before he went off, was the face of a player who new he had a fairly long break coming. My guess is a grade 1 if it's a grade 2 it could almost be season over.
Where do people come up with this kind of thing? What does the face of a player who 'knows' this even look like?
Absolutely baffling.