In an ideal world the Flyers should be running something like this:
Provorov - XXX
Gostisbehere - Sanheim/Morin
Morin/Sanheim - Gudas
Hagg
With XXX being a guy like Jeff Petry, a really solid top 4 guy. Then during the season they can see how Sanheim and Morin develop, either they're happy with them or they consider bringing in someone at the deadline (maybe a hockey trade including whichever one of Sanheim/Morin they like the least).
Unfortunately they have MacDonald making $5 million. If they could pull of a trade for someone like Petry by sending MacDonald the other way then that would be huge (though I imagine that would cost). They have Filppula and Read coming off the cap this summer which frees up $8.625m, so maybe they can do something creative.
though in an ideal world for the Pens, they keep dressing MacDonald, Manning and Gudas.