My theory back in January or something around there:
Pens want to get this done early, JR made it clear he wants to keep Fleury for the playoffs so a trade @ the deadline is something he wants to avoid and with Fleury's M-NTC, it could become somewhat challenging to trade him after the playoffs & before the ED with little time.
McPhee doesn't want to commit to any deals, especially when the player makes as much money as Fleury does, but if the Pens sweeten the deal with a good pick and make it impossible for McPhee to pass, he can make an exception and get it done.
Fleury and his family can relax and know what to expect, Pens keep 2 good goalies for the playoffs, free up cap space, avoid losing a skater and stay classy regarding Fleury.
Everybody wins.
Still think that's the case.