I'm sure they would prefer to trade Miller. But he has a full NMC, is clearly a less valuable asset, and they very well might not be able to get anything of actual value for him. You have respected guys like Friedman going on national TV and saying that they are shopping Petey. He want as far as saying he thought that a deal was almost done to send him to Carolina the day before the Rantanen trade got done. The Canucks beat writer just wrote an article about the potential that Petey could be the one who gets moved due to the lack of a market for Miller. Jeff Marek is talking about Petey potentially being the odd man out.
Rumors aren't gospel, but there is absolutely every indication that they are genuinely considering a Petey move.
And while they absolutely want a center back, this was their GM's quote about it in an interview a couple days ago: “So yeah, if a centre goes out of here we have to get some kind of centre back but it’s not going to be the same as the centre going out. It might not even be a No. 2 centre, but you’d have to do the best with what we have until we figure out how to fill that spot back in." Emphasis mine.
That certainly doesn't sound like a guy who is fielding offers that include centers that they like. That sounds much more like a GM who is prepping his fanbase for a trade where they get a warm body who can play center in the short term while they try to address the problem long term. Not for nothing, but one of Sunny or Faksa would be perfectly expendable if we swapped Kyrou for Petey. Petey would bump Schenn to 3C and those two would be competing for the remaining 4C spot. I'm sure we would be more than happy to throw Faksa into a deal and we could even retain 50% and still come ahead on the cap.
Again, I'm not expecting an imminent Kyrou for Petey swap. But I also think that Vancouver has done a terrible job managing this issue between Miller/Petey and it appears to me that the markets are drying up. Carolina was one of the few teams reportedly on Miller's trade list and I don't see them looking to commit money to Miller long term now that they will be trying to extend Rants. They were reportedly close to a deal with Carolina, who doesn't have an abundance of centers to offer in return. I think it is pretty likely that Jack Drury would have been the center going back to Vancouver in a deal where the other asset(s) were the primary target. That primary asset very well could have been Necas.
I think it is getting more and more likely that there simply isn't (and won't) be an offer that includes the type of center that plugs the hole they create in the short or long term. I think they are probably dealing with a reality where any deal for either player will leave them needing to make an additional move to bring in another center.