Pummeling Bully
Your combo has the chance to trip or move your target.
Prerequisite: Improved Reposition, Improved Trip, Improved Unarmed Strike, Pummeling Style†; base attack bonus +9, brawler† level 5th, or monk level 5th.
Benefit: When you use Pummeling Style to make an entire full attack or flurry of blows against a single target, if you hit with any of your attacks, you can attempt a reposition or trip combat maneuver check as a free action.
Source: Advanced Class Guide, p. 153