Seider is currently producing 0.51 points per game for last 2 seasons.
Other comparables, and their 2nd contracts after ELCs and their production for the last 2 season at same age:
2017 draftees:
Cale Makar 1.07 (got 6-year deal 9.0M) 11.0% of cap
Miro Heiskanen 0.50 (got 8-year deal 8.45M) 10.37% of cap
2018 draftees:
Quinn Hughes 0.94 ppg (got 6-year deal 7.85M) 9.6% of cap
Rasmus Dahlin 0.80 got (got 3-year deal 6.0M) 7.2% of cap
Noah Dobson 0.63 (got 3-year deal 4.0M) 4.85% of cap
Evan Bouchard 0.51 (got 2-year deal 3.9M) 4.67% of cap
Rasmus Sandin 0.42 (got 5-year deal 4.6M) 5.51% of cap
2019 draftees:
Moritz Seider 0.51 (???)
Bowen Byram 0.45 (got 2-year deal, for 3.85M)
Cam York 0.36 (got 2-year deal, for 1.6M)
How Yzerman will play this is contract situation, is by not offering the 8 years. Because that Heiskanen deal would give him 9.07M as a comparable.
He is proably offering 6 years at maximum, because Seider can't match Makar and Hughes as comparables anyhow. Those guys are putting points almost double more per game. Point-scoring isn't everything, but those guys will beat Seider also in total ice-time from their ELC seasons.
Only 5 year deal comparable is Rasmus Sandin, from same draft class. And this deal has some weight. Seider is better on production and plays a larger role, so definitely he is gonna get more than Sandin, that's obvious.
These short deals like 2 or 3 years are always cheap for RFAs, but I don't expect them to happen. 4 years does carry him straight to UFA. Don't see that happen either.
But these 5-6 years, Hedman-styled 2nd deals, is what I see Yzerman is targeting for. Caphit will probably be a steal, like Makar deal is, and that's what Stevie wants to spread around the whole roster. Agents can't do anything for it, when you select the right terms, with best team-friendly comparables.