Doubtful Habs suddenly turn into buyers next season. We'll have the same amount of injuries, we'll play the same players, and will most likely be slightly better defensively. I like to be optimistic about Savard and Matheson's value then. I'm more pessimistic with players that haven't cracked the line up even though they had the opportunity to do so: Barron, Heineman, Ylonen.
If we trade Savard it's harder to be optimistic with our defense as any progression teamwork-wise would get atrophied, and we'd need to pray that Reinbacher or Mailloux can break a sweat at 20-22 minutes per NHL game. It's not obvious, and can hurt much more. Matheson's value without Savard can take a serious hit.
In the end the real value we need to foster is Reinbacher, Mailloux and Hutson. It doesn't really matter if we get a late 1st for Savard or not imho.