Upon further inspection, I suppose he could be Obito if you assume that is scaring we see. He does share Kakashi's powers (affinity for lightning and similar Sharingan ability), as well as having a matching eye. Toss that in with the 'that won't work on me' he suggested to Kakashi and maybe it is Obito.
Still, it doesn't fit his character at all. We saw very little of him but still, I would be very surprised if that were the case.