Last guy he fought was actually really slick and took him the full 12. I think he can handle them but definately troubled him more than a come forward fighter.
I have to imagine Soto Karass and Alphonso Gomez are out of the question as both are Top Rank properties. GBP probably won't do a co-promotion on that level until they're certain Alvarez is legit. I'd like to say Mike Aranoutis is a good recommendation so kudos to whoever picked him. I'd also take a swing in the dark and suggest someone like Matthew Hatton or Lovemore N'Dou.