I honestly don't have a good read for what the Penguins will set up their bottom-6 to be next year. The easiest option is:
Beauvillier-Eller-Puustinen
Lizotte-Hayes-Acciari
But signing Lizotte for 2 years at $1.85 million to put him as a 4LW seems odd, both from the aspect of "he's more of a center" and "he's the obvious Eller replacement when Eller gets moved". This is especially true if the Penguins add another forward like I'm expecting them to.
At the same time, I think Lizotte and Acciari as a wing duo is pretty damn fast (or should be fast, if Acciari plays to his capabilities), so maybe they do just want to surround Hayes with a couple of speedy wingers. Still though, I like Lizotte more as a 3C than a 4LW.