Nearing 30 and has faced some bad injuries. Im not saying its showing in his play now, but when your talking about signing a guy into his mid 30's then he will be full out in the downswing in a couple years and costing one too much cap that can be spent on up and comers.
If he’s still Erik Karlsson for another 3-5 years then he’s that top pair RD we’ve been looking for forever. Hughes-Pettersson-Gaudette down the middle is still a really nice centre core. Like just think of that kind of defenseman on this team in 3-4 years. That would be worth the price on its own.