If Olausson can develop his game away from the puck enough to make the team next season as Burakovsky's direct replacement (perhaps even getting some NHL games at the back of this season) that would potentially give the Avs enough cap flexibility to land a big fish like Hertl in UFA...
Olausson's defensive and playmaking deficiencies would be covered a bit by playing on a line with Nichuskin and Hertl. If he struggles at times you could simply push him down to the 3rd line and put Newhook at 2C between Nichuskin and Hertl (though the 3rd line wouldn't be so strong in that case with NAK/LOC - Compher - Olausson).
In 2023 we'd have Mackinnon getting EJ's money, and then savings on Compher* ($2.5m), Jost* ($1m), Francouz ($1m), and the cap rising ($1m) paying for bridge deals for Newhook and Byram (enough for $3.75m aav deals each). Replace Compher/Jost/Francouz with prospects like Ranta/Foudy/Annunen (of cheap UFA signings). Ignore bonuses and overages. #Profit.
* one or both of JTC/Jost will probably be gone by 2023 anyways.
Note that this would work with a Forsberg/Giroux/Pavelski as well, perhaps even at an AAV lower than the $8m I have for Hertl here.