#1 Kevin De Bruyne
By now you would probably be imagining a Chelsea team with all the aforesaid players. Well, you can add Kevin De Bruyne to the line-up. The Belgian midfielder was signed by Chelsea in 2012 on the deadline day in January.
In the subsequent summer, as you would probably be guessing, he was loaned out to Werder Bremen. No sooner the player arrived in Germany, Borussia Dortmund expressed their interest in the Belgian. However, with Mourinho's arrival in 2013, any talks regarding a move for the player were scrapped.
Six months later, Chelsea decided to sell the player to Wolfsburg. The Belgian played in the Bundesliga for the next three years and scored 18 goals and providing 26 assists in the process.
Manchester City broke the bank for De Bruyne and he is now considered to be among the best players in the world at the moment. The midfielder netted a sensational 25-yard screamer against Chelsea, sealing the points for his team at Stamford Bridge this season.