Probably by message on his ships comms, he is a bounty hunter so tempt him with some credits and he'll do whatever you ask. I could totally se him becoming a kind of Boba Fett to your Hutt(s)!
If it's a bounty you're looking for... check Ecclessy's bounty board for Ji'Kel Vizsla (under illegal bounties). PM me if you're interested, I've got an idea for how it might play out.