I don't know, I think it would be a hell of a matchup. Alvarez can really fight imo, he is a lot better than Chavez Jr, and while he hasn't been in with any elite guys he's still better prepared than Jr was. The only other guy as or more dangerous to Martinez at 160 might be Golovkin, but this is certainly a worthy fight and kudos to Saul if he's serious about wanting it.