Tua vs Arreola would be a ****ing war. But I don't think Tua's people want to put him in the ring with Arreola right now. Tua just made his comeback and in Tua's next fight I'm sure they will be looking for an easier opponent before they challenge the top 10 fighters.
I believe Eddie Chambers is available. Chambers would outbox and beat Arreola on points though. Not a good match-up for Arreola.