article_snippet: Chelsea sold defender David Luiz to Paris Saint-Germain for a staggering £50million last summer .
article_snippet: Juan Mata was a star player for Chelsea but when Jose Mourinho arrived Juan Mata sold Juan Mata to Manchester United .
article_snippet: Belgian forward Romelu Lukaku was sold to Everton for £28m, giving Chelsea a considerable profit .
article_snippet: The average age of Belgian forward Romelu Lukaku Chelsea team at Wembley on Sunday was 27 years and three months compared to the 28 of City, beaten 2-1 by Liverpool at Anfield earlier in the day.
article_snippet: Mourinho has used to great effect made a profit of about £18m on Romelu Lukaku, who made just 10 Premier League appearances for Chelsea, when Premier League was sold to Everton before the start of the season.
article_snippet: Juan Mata was moved on to Manchester United for £37m and David Luiz went to PSG for £50m.
article_snippet: In return Juan Mata signed Diego Costa, who played in last season