The Portuguese maestro has been far from special.
There was much excitement surrounding Chelsea when it was announced that Jose Mourinho would be returning to take over after six years away from Stamford Bridge.
Yet it has been a less than spectacular start for Mourinho so far this season and there have been some strange decisions from the 50-year-old.
Here are the weirdest five.
1. Making De Bruyne train with the development squad
Since UEFA introduced the Financial Fair Play system into European football, the Blues have adopted a system of buying young talent and then developing them via loan spells.
One such player is Belgian starlet Kevin De Bruyne, who came back to west London after spending time with Genk and Werder Bremen.
The attacking midfielder started against Hull City in the first game of the season and was awarded the Man of the Match award – but has dropped further out of contention ever since.
De Bruyne is considered a regular for the successful Belgium national team and showed superb form in the Bundesliga and yet Mourinho has made the 22-year-old train with the reserves.
2. Not playing Luiz
Last season Chelsea had a mammoth campaign of competing in six different competitions over the course of a year and defender David Luiz was a stalwart throughout.
The club paid £21.3m to Benfica for the Brazilian and in 2012/13 Luiz showed just why that money was sanctioned with some great performances.
Yet despite the lack of pace and maneuverability of Gary Cahill and John Terry, Mourinho refuses to replace either of them with the 26-year-old – who has started just two league matches.
3. Letting Lukaku leave on-loan
One of the big surprises of transfer deadline day on September 2 was the decision to allow Romelu Lukaku leave the Bridge for Everton on-loan.
Mourinho had promised the Belgian – like De Bruyne an exciting young talent – game time for the Blues and yet went back on that by letting the striker leave.
None of Demba Ba, Fernando Torres or Samuel Eto’o have managed to find the net in the league yet; Lukaku meanwhile has scored one goal in one match.
4. Snubbing Mata
This is probably the No.1 bizarre decision from the manager as Juan Mata was the club’s best player last term and was nominated for the PFA Player of the Year award.
A poor display against Tottenham Hotspur was reinvigorated at half-time when Mata was brought on and the Spaniard changed the game with the midfielder’s creativity.
With the other attacking midfielder’s performing badly it is even more confusing why the Spain international is absent.
5. Buying Willian
It was probably the biggest favour the club paid London rivals Spurs when Chelsea signed Willian ahead of Tottenham at the 11th hour.
The £30m transfer fee didn’t seem too odd for a Brazil international in great form, but the fact that the side were already well stocked in the 25-year-old’s position made the decision odd.
Andre Villas-Boas instead signed Christian Eriksen for around a third of the price and whilst the Dane is in great form, Willian has looked lost and out of touch at the Blues.
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