By Joshua Lees Butch Harmon believes Jon Rahm’s decision to leave the PGA Tour to join LIV Golf could in fact reunite professional golf back together. The PGA Tour has been at war with LIV for some time, with the latter luring in a number of big names from the American-based circuit. The latest is Masters champion Rahm, and it appears to be their biggest coup yet, with the Spaniard signing a deal worth a reported £450million. As things stand the Tour and the Public Investment Fund of Saudi Arabia (PIF) are in negotiations to end their ugly dispute, but with their December 31 deadline fast appr…