The Penguins won't acquire Evander Kane. Since Matt Cooke, the Penguins have not employed a single player who could be classified as a "bad boy", and even he wasn't a severe malcontent in the locker room. Neither was James Neal.
Even their enforcers - Eric Godard, Ryan Reaves - were considered good guys in the locker room. Phil Kessel wasn't a bad guy, just a source of frustration with coaches. Kane, however, has a long, long history of being troubled off the ice and wearing out his welcome in the locker room. It's a shame, because he's a fantastic talent.
But he's not worth the trouble and the Penguins won't be interested. The fact that they were scouting that particular game was likely a coincidence. Teams scout AHL games all the time.