It should be 8 years if he's getting that much.
5 or 6 years should put him under 10 mill, if not under 9.5 mill for a 5 year deal.
Matthews deal should have been around $10 mil for his 5 year term.
Based on Matthews offering 3 X $9 mil bridge deal (putting the price of RFA years at $9 mil) and Leafs buying only 1 X UFA year (putting a price of UFA years at $15 mil)
So the contract would break down as $9 mil +$9 mil + $9 mil + $9 mil (4 X RFA) + $15 mil (1 X UFA) = $51 mil over 5 = $10.2 mil AAV.
So I agree Marner should come in below Matthews on Leafs pay scale, so it would put him below $10 mil on a similar 5 year deal, buying only 1 x UFA year.
Matthews contract @ 8 years should've been $9 mil + $9 mil + $9 mil + $9 mil + $15 mil + $15 mil + $15 mil + $15 mil = $96 mil /8 years = $ 12 mil AAV buying 4 X UFA years, and falling just below McDavid @ $12.5 mil AAV (=$10+10+10+10+15+15+15+15 = $100 mil/8 years), but not $11.634 for only 1 UFA year as that puts that year at $58.17 (total) - $9 X 4 (RFA years) = $22.17 mil (UFA year) = $11.634 AAV over 5.
Leafs problem however is Leafs overpaid Matthews so significantly as if his $11.634 AAV was based on 4 X RFA + 4 X UFA years that now Marner will demand the same overpayment on a shorter term than max length as well, due to very bad past precedence setting prior contract, that Marner is now using as his comparable in terms of Leafs own internal payscale.
Using that same structure for Marner as Matthews on a 6 year deal (so that all 3 of Matthews, Nylander and Marner don't hit UFA after 5 years together)
Year 1 @ $9 mil +Year 2 @ $9 mil + Year 3 @ $9 mil + Year 4 @ $9 mil + Year 5 @ $15 mil + Year @ $15 mil = $66 mil / 6 years = $11 mil AAV.
So my expectations are ~$11 mil on a 6 year term.