That's a good question. I don't think we NEED to trade one and after listening to several pods and hearing old quotes from Torts (He used to say you'll use at least 9 d-men in a year), having the depth is a good thing. I think the odd man out is Blankenburg at the moment. he's waiver exempt as I understand it and while I know many like his game I don't think his injury history, size and RHDness is going to play into his favor. Harder for him to earn a spot I think. That said...
Werenski, Provorov, Severson, Boqvist, Bean, Gudbranson, Peeke and Blankenburg all are on 1-way deals but Blanks is waiver exempt (17 more games). Blanks is the only RHD that appeared comfortable on his off side but you also have Jiricek pushing and I believe they still like Bean. I also think Berni played really well as a 3rd pair on the LHD side and remains an option as a 7/8 guy.
I don't think you need to trade one but if there was a really good offer, I think CBJ would strongly consider it given they have Svozil, Jiricek, Christiansen, Sweezy and maybe Bjork (if re-signed) to come up in a pinch. I don't think you'll see Ceulemans with any NHL games next year. Either way, they have some depth and could also still sign a vet to sit in the press box too, but I don't konw that they would do that.
So, maybe no trade but one that includes Peeke or even Boqvist as a part of something bigger with our forward depth needing thinned could be possible for sure, just maybe not as much as I thought just last week.