I think Mary may not have the tactical sense but man management is his key strength. Players seem to really respect him and the culture at the club is great and has been for a while. If they can get Neil Henry as his assistant as Neil has the good tactical nous that Mary needs it will be a good combo as Henry seems to have bad man management skills. They can strike up a good balance and be very successful together. I don't get why they got that pommie dude instead.