Mourinho might have gone unbeaten at home in over nine years with the various clubs he has managed, but his self-confidence seems to have brushed off onto the rest of the world who deem him one of the best managers of all time.
A question that needs to be answered is perhaps whether it is harder to manage one club for a sustained period of time—Alex Ferguson, for example.
Or is it harder to flitter between leagues, winning titles and then immediately moving on?
Mourinho seems to favour the latter, but the quality of the clubs he has managed have all been relatively close to the top of their game and had plenty of money to spend.
FC Porto have been close to the best Portuguese team in their league for years, Chelsea had Lampard and Drogba in their prime with a huge oil-rich bank account. Inter Milan had won Serie A two years running when Mourinho took over, and Real Madrid only have to beat Barcelona to win La Liga.
His achievements are superb, don't get me wrong, but it's premature to call him the best ever.