Westhoff is not a KPF. We're more likely to play a Dixon Monfries/Neade Young Wingard Butch Palmer arrangement. If Chad is "our" Cyril we'd be looking for "our" Gunston/Breust combo out of Young/Palmer. No KPF or even MPF depth, sure, with Doogs out for 2017 ... apart from Lobbe <ducks head>.
As harsh as it sounds hot on the heels of Jay's announcement we could have got something out of Freo for him, yet we didn't, who knows why, probably because Ken didn't want to play Butcher, or didn't want to blood Doogs, or didn't want to re-purpose Lobbe, I don't know, maybe all of the above.
It's far more likely that Westhoff has two years left in him now, even in his roaming role, than it was for Schulz at the start of this year. We need a KPF ready to go R1 2018 and can't rely on it being Doogs because he's probably going to spend half of 2018 regaining match fitness. So if we're going to trade one in on the cusp it has to be this year, hence the Black/Daw/Wright frigging Vickery natterings. If we're reliant on Westhoff playing a KPF role part time in 2018 we're screwed. So if there is a decent offer for him this year when he still might have value we'd be nuts not to consider it rationally.