In a wild day that also included the trade of Jordan Staal and the draft of two first-round picks, the Penguins made another move late Friday night, sending defenseman Zbynek Michalek back to the Phoenix Coyotes.
Michalek spent five seasons with the Coyotes before coming to the Pens two years ago.
Of the three players the Pens will receive, Ruopp is the most highly-regarded, although he's not a top prospect. He doesn't appear to be much of a scoring defenseman at all, but he's apparently very strong on the defensive end.
Nonetheless, this trade appears to be mostly about clearing Michalek's salary, which should increase the volume of the Zach Parise rumors that came out in full force earlier on Friday. The Penguins now have a lot more cap space than they did a few hours ago.
For more on the Penguins' big night, be sure to check out PensBurgh.