I can almost guarantee that won't happen,
1. Cormier's stock is far higher than Pat's
2. Cormier would do whatever he wanted with Pat's lifeless corpse, this is the best wrestler in MMA, Pat is probably the worst.
After he beats Barnett, Cormier will probably be brought to the UFC to unify the Strikeforce and UFC HW titles, as there will no longer be a HW division in Strikeforce.
The Reem never got an automatic title shot DC definitly isn't. If he gets by Barnett he will likely get somebody one fight away like Mir, loser of Lesnar/Overeem or the loser of the winner of Reem/Lesnar and JDS.