triple G is overdue to put someone to sleep or writhing on the canvas again. the most interesting question about this fight is whether it will be an overhand right or left hook that does it.
I think plan A for Geale would be to see how GGG deal with infighting, grabbing/holding/wrestling and punching, etc. For me this tactic wouldn't work and too dangerous as GGG has shown very good short power punches, plus Geale is not strong enough to maneuver GGG on the inside the way he wants. Plan B is to use his advantage in speed and stamina plus his foot work to create angles to frustrate and make GGG miss his big shots. If plan B works on the early rounds, Geale should find the later rounds to be easier and perhaps win on a decision.