large overedge doublelobe?
This looks like the hotspot of a plume originating from a barely-visible jet coming from the top-right. There is possibly a very faint radio core coincident with an IR source at the hotspot's 1 o'clock, almost half way towards the edge of the field of view. If so, I don't think this would be a giant candidate (unless the host galaxy is very distant). NVSS and FIRST should show up a second lobe between them?