Kambosos already lost all of his belts, so there's no reason either Lopez or Kambosos need a rematch since they're didn't get anything and only risking their good record. It's too soon for the rematch, I think if Lopez is already start collecting a belt and Kambosos move up to light welterweight division, the rematch would happen on the new division. Of course it will be on the same hype since Kambosos will become a challenger again.
That would be a blockbuster fight once again because as we saw Lopez with his last Saturday, he is back again and can really compete at his best or even more strong this time. They became rivals in this era, hope they will gonna fight again soon because fans are loving to see it. It's not really a bad idea for them to see each other again in that division since they already went through a number of fights in the lower divisions, and their body will soon adapt to fight in the light welterweight division.
I'm okay with Kambosos vs Lopez rematch, no belts but these two gave a very entertaining fight, so we can expect that many fans will watch this and they'll be able to sell a good PPV numbers. Teo is trying to be a a champion in the new division, but he has not proven anything yet since the last fight was obviously a cherry picked one.