If he puts up numbers at 38 that are even close to what he's doing at 37 (over a point per game), and he wants to stick around, I don't see Joe Sakic turning him away.
Who knows, though. Might depend on what Byram ends up doing, maybe Colorado doesn't want to lose too much off the back end.
That's the gamble though, it's only a matter of time with Pavelski before his play falls off a cliff. Ultimately depends on how much he wants - if he's cheap i'm sure Sakic will welcome him back with open arms, but if he wants $5+ mil the Avs can't afford that gamble.
Regardless, Girard isn't getting traded with the uncertainty around Byram.