"?Jose Mourinho has just reached another historic milestone on his never-ending journey to conquer the world of managerial football and has taken charge of Manchester United.
The Red Devils are in desperate need of rejuvenation and many agree that Mourinho is the man to play that part. United are craving a shake-up and the 53-year-old can do it - his name alone attracts some of the biggest and brightest talents on offer.
But for all his arrogance, tactical nous, and determination, he is not perfect and does make mistakes. Over his career, albeit rarely, he has signed players which have fallen through the cracks.
So let's take a look at some of the best and the worst signings made by The Special One:
The Best
Jose has linked up with fellow countryman and defender Ricardo Carvalho twice over the course of his career for a combined fee of £28.5m.
The 38-year-old was brought in under his tenure at both Chelsea and Real Madrid and became a reliant and integral part of his defence, teaming up with John Terry and Pepe respectively.
Didier Drogba is without doubt one of Mourinho's greatest buys. Coming across the channel from French side Marseille, the Ivorian took the Premier League by storm scoring more than 100 goals and helping the blues to the 2012 Champions League trophy.
During his tenure at Inter Milan, Mourinho enlisted Cameroonian Samuel Eto'o in a straight swap with Ibrahimovic going to Barcelona in the opposite direction.
The striker played in an unfamiliar left wing role in Mourinho's side but managed to score vital goals on their journey securing the treble.
The Worst
Ricardo Quaresma came to Mourinho's Inter for more than £18m for FC Porto in 2008.
The Portuguese international made a measly 13 appearances for the Italian side before being sent to Chelsea on loan in an attempt to inspire his form. Quaresma watched from Stamford Bridge as Inter completed the treble.
Having had such an outstanding record with AC Milan, the £32.5m paid for Andriy Schevchenko was almost excusable. But the Ukranian striker flopped and spent the vast majority of his three years in London glued to the bench, watching Drogba scoring goals for fun.
In 2011, after having played in the Spanish capital for Getafe, Pedro Leon made a £7.5m step up to join Mourinho's Real Madrid.
Leon didn't even make a dent in the Los Blancos first team and returned to Getafe after a pointless six appearances.