When Chelsea were in the market for their new manager, almost every fan seeked the return of 'the Special One'.
The only man in their mind was Mourinho, but already his methods and selection policy are being questioned.
The Portuguese coach instantly made his mark on the Chelsea XI when he made it clear he was to make Oscar his main number 10.
This soon created friction between Mourinho and the Chelsea fan base as for the last two seasons the Chelsea fans have adored Juan Mata, the Spanish playmaker who currently holds the actual number 10 shirt.
Arguably, Juan Mata has been the best player amongst the Chelsea ranks in the last two years and was voted Chelsea's player of the year by fans last campaign. Mourinho however, believes Oscar would be better fit for the role and has thus far refused to deploy Mata as his number 10.
No Chelsea fan enjoyed the sight of Juan Mata in the stands this weekend, and not to make the squad for the game will surely have been a source of frustration for the player himself in a World Cup season.
The depth in Chelsea's squad is prodigious. Chelsea's midfield options allow Mourinho to play strong teams in both league and in Europe. Even though Chelsea are rotating their team for both domestic league and for the Champions League; Mata is still struggling to find his name on the team sheet.
Last season Oscar was also profound but Chelsea fans believe Mata is of greater importance to the Chelsea team.
Although not everyone agree's with Mourinho's decision surely Mourinho knows best.
Having managed teams with great squads before and dealing with big ego's, Mourinho knows how to handle a squad and how to make them perform to the best of their ability.
Jose Mourinho is known worldwide for his managerial credentials and his success. Winning the Champions League with FC Porto and Inter, the Premier League with Chelsea and the La Liga title with Real Madrid, he certainly knows what team to play and how to push his players.
In every team that Mourinho has managed, he has picked his favourites and most reliable players. And he's certainly never been afraid to leave out big names. Although there has been some controversial decisions made by Mourinho, his management style has continued to bring him success.
So why are his methods being questioned so early on in his reign?
Mourinho's job is to pick his best team. If he feels as though Oscar is a greater fit for the number 10 role should Chelsea fans trust his judgement?
If Oscar does not play as well as expected then it may be right to question Mourinho's decision. As Oscar has had a strong start to the season often making inch perfect passes and scoring a few himself, perhaps he should be trusted.
The number 10 role: Oscar or Mata? Feel free to leave your comments below.
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