Honestly, Bonnars best chance to win this fight to go after Silva right from the buzzer, whether he wrestles, or comes with strikes. Fighters that have followed that game plan have done best against Anderson, because if you stand there and let him have time to figure out your movement, it would be too late.
I honestly don't think Bonnar has the wrestling to take Silva down. So he'll probably end up doing what he does best, and standing/brawling.
This is a weird fight because I can't see Silva not dominated, but I can't imagine Bonnar getting dominating. It will be interesting to see how this turns out.