I think the only guys that really got overpaid are Marner, Matthews and JT.
Matthews overpayment is really small though and he is a unicorn so I have no problem with that.
JT comes with an asterix - UFA's get overpaid on a regular basis so you could argue that he got the market rate, and therefore isn't overpaid.
Marner is the only clear mistake. He was NOT a UFA, Dubas didn't use the leverage he had. So far the impact of that contract hasn't spread to others, but right now is where it becomes a problem IMO as I think it's impacting WIllie's ask. If Marner was making 9 (or 9.5 tops) on a 7 year deal like he should be, we'd have a much easier time signing Nylander. JMHO.
Dubas really f***ed up big time on this one. He said before the summer that he wanted to get Marner's deal done early, did not want to through the same situation as he did with Nylander, I was like WTF are doing dude? He held firm on a number, was willing to let Willie sit out the season if that's what it takes and Nylander caved at literally the last minute - that's exactly what he should have done with Marner. The way to get it done earlier is to pay him more than he should, he basically announces to the world that that's his plan with Marner and Marner's agent is probably laughing hysterically to this day.
Chickens coming home to roost.