No.

He’s as close to as untouchable as it gets.

I know McAvoy is good but the Devils shouldn't trade equivalent to 5 first-round picks for him

Keep the assets!
We don’t have the depth to make a home run trade
Not yet at least.

(Also worst keep secret in hockey that McAvoy wants to eventually go to NYR).

Well.

The untouchable thing kinda goes out the window at some point if you're given potentially 1/3 of a playoff team for the player I mean wow what a return here

"Even Gretzky was traded... " etc.

I can't think of a single piece that NJD could use as a center piece to get me to trade McAvoy.

Is Carlo availabe at all?

Not really. With Miller injury history a shallow depth at RHD can’t see any reason he would be. They gave him the A for a couple games earlier in the year when injuries hit so they think highly of him. But if an offer was made that made sense....anything is possible. But i’d imagine you’d have to give them a significant reason to move him.

Let Boston’s window close. Giving up a ton of assets for one player isn’t going to push the Devils rebuild any further along

You are right. Giving all that up would stunt their rebuild. The time for Boston to trade McAvoy, if ever, would be when Bergeron, Krejci and Rask leave. Unless of course they find a way to stay relevant and keep the window open going forward.