I'd yank that deal back if you can. Lucic kicks the crap out of your scoring system, especially as a winger.
Ultimately you might just have to back off Pietrangelo. You have fairly good defensemen as is. Maybe a few wild cards but I suspect you can replace a lot of what Pietrangelo would offer you via the waiver wire. Lucic's across the board production, tough to replace. And don't get me wrong, Pietrangelo is a beast but I see moving Toews, Kopitar or Lucic as a sideways move and I'm always going to side with keeping a forward because they typically provide more consistent scoring.