I like Carlo, and I have nothing against DeBrusk, but he isn't a priority as part of a return for Miller.
My post a little ways up had Carlo and two other, future oriented pieces (I had used Lysell and Boston's 2023 first) for Miller at half retained. This has not been received well from most Boston fans. Debrusk could be one of those piece in a pinch, but I would be less enthusiastic about it than other offers, personally. We have plenty of wingers that can bounce between our first and second and third line like (in no order) Boeser, Pettersson, Garland, Pearson, Podkolzin and Hoglander. Klimovich is a dark horse to make the big club too, and guys like Petan and Chiasson could return as well. Debrusk outclasses some of these guys, but not all of them.
Myers is worth something to us. Even with Carlo, Myers is player we need and can make use of, as our RHD depth behind him is Schenn, Poolman and then prospects, specifically Woo who isn't ready from what I've seen on our farm team. I'd argue for a second round pick, or Beecher, being included for Myers.
Carlo, Debrusk, Boston's 2023 1st and either Boston's 2022 2nd or Beecher for Miller at half retained and Myers would be my counter.