Although Chelsea were winning most of their matches last season, landing the FA Cup and League Cup double, their style of play was often uninspiring.
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They never won over the support of neutrals and at times Mourinho was vastly more entertaining in his pre and post-match comments than his team were on the field.
Still, he brought glamour and passion and was a breath of fresh air for the English game.
English Premier League: Complete Coverage
He built an incredible team spirit at Stamford Bridge with loyal men prepared to back him all the way and Chelsea will not be the same without him.
Whether they go back to being the also-rans they often were in the past or grow into one of the world's top clubs as they believe they are destined to become is now no longer Mourinho's concern.
The new man will have a tough act to follow.