With Sir Alex Ferguson having retired, both Jose Mourinho and Arsene Wenger will see an opportunity to seize control of the Premier League.
After his relative failure at Real Madrid, Mourinho is chastened. He will now look to build a dynasty at Chelsea to rival that of Ferguson at United.
Wenger is under no illusions about Mourinho's ability as a coach. He told The Guardian:
I think Chelsea currently have a great coach in Rafa Benítez, but if they part ways at the end of season, of course José Mourinho would be a good solution for Chelsea. Mourinho is one of the best in the world.
However, the Arsenal manager has dynastic ambitions of his own. He too has a reputation to restore. After eight seasons without a trophy, he will be desperate to remount a challenge for the Premier League title.
It promises to be a fascinating duel.