Im not sure you'd have to give up a prospect like O.O to get Klingberg. Would rather Schenn for cheaper.

You know there is only 6 defense slots right?
Makar
Girard
Manson
Toews
Byram

And you want to add klingberg while JT compher is the teams 2c

Jack Johnson is alot more affordable for a 6th dman.. and Englund has been great

I think the price on Klingberg would just be too prohibitive. It's not a bad idea as far as the D goes with all the injuries, just be too expensive. If he could be packaged into a deal for Henrique though as a 'one stop shop' who knows. He hasn't been great this year so his value won't be as high as ANA likely hoped when they signed him. That would be better than adding Puljujarvi to my mind. Save him for the off season when he can be added cheap as a reclamation project after EDM don't qualify him.