McNeil might make a good KR; not sure about PR, though. Regarding Howard, he may have sufficient speed and elusiveness, but you typically don't see tall guys returning kicks.Always seems like we find the right guy because we knew what qualities to look for like vision, shiftyness, and someone who isn't scared of getting hit. I think McNeil should be in the running for PR, possibly Dayton Howard too.
Anyone who has observed practice would have a much better idea, but I'm inclined to think we're more likely to see one of the new transfer receivers returning punts than either of those two guys.