Roles of Manager is much bigger than the best player in the team, as per my views. They make strategy, maintain the integrity in the team and help them to motivate to win.

That's the reason why all those high performing managers are in the center of discussion. Addison of Mourihno last month in Spur has immediately started to perform well with the same team. So they infact plays a important role in any football match.

Sometimes, it seems a battle between two managers in a match, specially when high profile teams play each other.