From a CG standpoint, I can’t find any evidence of tampering.
However from a photo standpoint, a couple of things stand out to me as warning flags. Honestly I would give it a 60/40 which means it very well could be real and I’m just paranoid.
It would appear gravity for the guy on the wall is to the left not down. Note: Hair, pants and shirt all “fall” to the left, not down, especially if they wanted to “stay” down on the ground as he jumped.
In order to get a photo with that little motion blur, you would need to be shooting at incredibly high shutter speed. At that fast of a shutter, I don’t believe the photo would be that blown out.
Eyeline on the guy in the background seems to be looking at something higher than the action taking place.
I can’t find anything that I can stake my life on, but I would say photoshoped.