Only if he signs a long term deal.
Because this year and 3 more at 4.6 AAV don't count for enough? He makes 1.325m more than Scandella and is thought to be a massive upgrade on Scandella in terms of all-round play, on top of being 8 years younger.
By the time Chycrun is eligible to sign a new contract, the Blues will either be looking to sell off or retooling.
Perron will likely retire (age 37)
ROR (34) will be a year into his extension or a year gone
Buchnevich 1 year from UFA or signing an extension at 30
Faulk (32) and Krug (33) have 3 years left
Schenn (33) will have 4 years left.
Barbashev (29) 1 year gone, or 1 year into extension.
Our core pieces in 3 years, as I see it:
Thomas 25
Kyrou 26
Parayko 31
Neighbours 23
Perunovich 26
Gotta say Chychrun at 26 fits into that age for another core pretty well and helps us out today. Not to mention Alexandrov is likely in the mix for a middle 6 role. Beyond that, I can't say I see anyone I'm confident is still on our team and thought of as a core piece in 3 years time - I think Schenn, Krug and Faulk are still with us, but are bones of contention with the fan base.