His dealings in the transfer market this summer have so far proved true to that statement, as Chelsea have gone about their business in a quiet and confident manner.
Whilst all the hype has been surrounding the club’s pursuit of Wayne Rooney, Mourinho has bought in German forward Andre Schurrle, and young Dutch midfielder Marco Van Ginkel.
Even the Rooney saga has seemed surprisingly relaxed, with Mourinho seemingly happy to bide his time before coming in with an improved offer for the forward.
Problems may arise should United keep to their stance that the 27-year-old is not for sale, with Mourinho previously suggesting the striker was the clubs one and only summer target.
Therefore it is important Chelsea do not rush into hurried deals for alternatives, with the new season just over two weeks away.
In an ideal world, Mourinho will head into the new season keeping hold of his current top players who have been attracting some interest from top European clubs, whilst adding Rooney and a midfield enforcer to the fold.