How do you see Marner making out with, say, Johnson and Gauthier as his linemates? Because that's basically what Matthews was saddled with all last season. Everyone says Marner can drive a line on his own, shouldn't see any drop in production, right? BS.
Tavares got a whopping extra 3 points this season with Marner. Marner's totals went up by 35 points. Not hard to see who benefited who the most in that equation.
If I was GM I'd offer him 1 year at whatever salary Marner demands then put him with a couple of plugs for the season to demonstrate this point to him and his camp.
(Not really, just a thought experiment)