The most toxic, incendiary and darkly entertaining managerial rivalry continues Saturday at Old Trafford when José Mourinho and Pep Guardiola resume hostilities. For the first time in a Manchester derby there will be as much attention on the technical area as the pitch.
Do not be fooled that both managers have, by previous standards, been almost gentlemanly in the buildup to the match. The enmity and animosity remains just below the surface. Forgive and forget? Not a chance.
The "clasicos" between Barcelona and Real Madrid when Mourinho and Guardiola went head-to-head were X-rated clashes that never failed to deliver the good, bad and very ugly. Blue language, red cards, white-hot atmosphere. And unmissable.