Most likely? If it's not a domestic fight then Malignaggi or Maidana ... both beatable former Khan opponents. Khan won't be goaded into a fight just yet with a guy that hasn't breached the domestic scene yet unless it's a homecoming keep active type fight.
Hope its not Maidana as i think Brook beats him badly at 147. Maidana can do well again at 140 he needs to stay away from 147. Brook will probably fight Paulie or Senchenko next.
I hope he fights a genuinely interesting opponent... Berto, Alexander, Jones, Ortiz, Zavek or maybe even Bailey or Senchenko. Problem at 147 is Fraud and Fanny are occupying 2 of the titles but they won't fight each other to unify but they won't fight guys like Brook so 50% of the titles are held up.
I reckon it will be Mosley. Yes he's old, yes he's shot but Kell will knock him out (if Alverez doesn't get there first) As many have already said, lots of 147 fighters are already tied down. Hearn will need to bide his time for the next couple of months to see what happens
The fight I'd most like to see is Jones because they are at similar points in the careers and I think Brooks is too fast for him, it's a fight that could possibly be made but they ain't sticking him in there with a Victor Ortiz or Alvarez off the back of this Hatton win ... as much as we'd like to see it.
Put Kell in with Zaveck, Soto Karrass, Jose Miguel Cotto then go for the Malignaggi-Senchenko winner after the WBA title.
Guy needs to start fighting on HBO or Showtime. Thats the only way he'll get Khan or the top welterweights to fight him. I think Jan Zaveck would be interesting. He's been on HBO and they said they would like to have him back.