Hi! What I personally noticed when working with the photo was that an eraser tool was used down by his leg, leaving some chunks out of his jeans, giving his leg a weird look.:
But you bring up an interesting question. I think those blurs in this case might be too low for what you are thinking. I will say that over the last couple of days I have been looking at his arms because they are not right. So with your thoughts in mind I would like to go back have another look. Big Disclaimer here: I am no professional nor do I know much about this stuff, so keep that in mind!
As far as the white thing at his neck,
and this is my opinion only after doing an experiment with the photos: It is not goggles. I combined the two pics of BG and moved the fade key back and forth and whatever that is is fluid, not rigid IMO. Some think rope and that would make great sense but I found the white bits to change thinner and thicker, slightly moving, even though it lined up perfectly, being the same size for the most part (so distance does not seem to be a factor). Also I find the white thing to be jagged rather than smooth. I had thought I would come back to it at a later date as, at that time, I was working on lining up his face. Now I can revisit it with fresh eyes!
It is dinner time here so I cannot do this right away but I can have a look after everyone in my family goes to bed? Otherwise, maybe someone else will give you an answer that you are looking for.:findinglink: