Spat with Abramovich cause for Chelsea boss' departure?

Chelsea Football Club boss, Jose Mourinho, has made an abrupt departure from his job, shocking the English football world. The club is owned by Russian billionaire Roman Abramovich who, according to reports, was deeply dissatisfied with its recent results

Roman Abramovich bought the club in 2003, and has invested about 440 million pounds in it.
 
Meanwhile, Jose Mourinho was thought to be unhappy with Mr Abramovich's interference in the team's affairs. Allegedly, he has also complained of a lack of money to acquire new players.