The fourth Vancouver adds is arbitrary, I mostly just wanted it to be Vancouver adding the sweetener in this scenario and Vancouver has and extra fourth round pick in 2023 hanging around. I would expect that Columbus would want 50% retention on Miller as well as a draft pick in order to even begin conversation about this trade, with another conditional asset going Columbus' way if Miller does not re-sign with them.

That being said, Columbus seems to be becoming a bit of a destination and may be somewhere that Miller wants to stay.

Trades cannot be made conditional on a player resigning anymore. Not since last year.

I wouldn't say Columbus is becoming a destination but Miller is from Ohio. little johnny only went there because Philidelphia didn't want him, signing in Calgary for 7 years would have made him look like a fool after he'd already turned down Calgary's 8 year offer and Columbus offered him the most money other than Calgary.