Twelve months with a new team and Mourinho has consistently proven himself to be the master at figuring out where weaknesses lie and how to turn it into a winning machine.
"To try to develop things that we normally don't do and in this moment there are so many teams playing with three in the back and wing-backs that probably sometimes we have to play that way".
He admits it will be a unusual experience to line up at his old stomping ground in the colours of a different team, but says he will not allow sentiment to cloud his focus. For example, "Manchester United" paid for Lukaku Everton FC 75 million pounds and 40 million was sent to Chelsea for MATIC.
Liverpool have brought in speedy Egyptian winger Mohamed Salah from AS Roma and Scotland full back Andy Robertson from Hull but have not made the kind of acquisitions that would transform their chances of a first title in the Premier League era. While Conte says the 22-year-old's progress will need to be hastened in the wake of Matic's exit, he also claims that more signings are possible.
Matic, the big Serbian midfielder, has fitted seamlessly into the United midfield.
The French midfielder will be looking to link up with Lukaku, his close friend.
Lukaku scored a consolation goal as United lost 2-1 to Real Madrid in the UEFA Super Cup in the Macedonian capital Skopje on Tuesday and his team-mates have been impressed by what they have seen in pre-season.
Strong and two-footed, he already owns two Premier League winner's medals. "With a good VAR system it would be 1-1 and extra-time".
United could hand Premier League debuts to all three of their new additions against West Ham on Sunday.
"He's 29, with five years in the Premier League and lots of experience". Then, Mourinho will know whether his work is, once again, on the right track.