He called himself the " Special One" when he gave his first press conference upon signing for Chelsea Football Club and despite proclaiming recently that he was the "Happy One", most of the football fans worldwide still rightly address him as the Special One.
Over the years, he has proved himself to be truly special, winning titles everywhere he managed, cleverly using the press to his advantage and of course, the adorable relationship he has with most of his players, Marco Materazzi and Zlatan Ibrahimovic can attest to that.
His Chelsea team of 2004/2005 had the best defensive record and highest number of points in the history of the Premier League, his Inter-Milan team of 2009/10 won an unprecedented treble, his Real Madrid team of 2011/2012 achieved a league record 100 points, scoring a record 121 goals with a goal difference of +89.
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His Chelsea team of 2014-2015 became the first team to stay top of the Barclays Premier League table for 274 days, another Premier League record. All these records justify his claims to be the Special one.
However, just a few months into the 2015-2016 season, questions are being asked about how "Special" the " Special One" really is.
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His Chelsea team seem to be all over the place, lacking motivation, fight and passion. They are always outfought and outwitted tactically in every match and the Special One seems to have more questions than he can currently answer.
He is widely known to squeeze every ounce of energy out of his players, but he seems to be losing the trust of even his most reliable players.
Against Porto on Tuesday, he had Nemanja Matic, John Terry and Eden Hazard on the bench in a game he described as the most important of his team's Champions League group stage games.
It is shocking that these same players were the bedrock the successes from last season were built upon. Mourinho himself has identified individual poor performances as the reason his team are currently struggling, hence Chelsea might not be far from leaving the abyss they have found themselves in once these individual players get back to form. But the question is: when will this time come?
There is no doubt he is special, but he must fix the current situation, find a way to pick up his team and get them firing.
It is very unlikely we are beginning to see the downfall of the Special One but he has never been in this sort of situation before, hence there is no history to analyse for answers to questions being asked of his current plight but is he a comeback king?
The answer is an absolute YES and that is what I hope this whole Chelsea malaise becomes a comeback story.
However, whether it becomes a comeback or a downfall story depends on one man and that man is Jose Mourinho, the self-acclaimed "Special One".