As you may have noticed, Jose Mourinho has been a little unhappy with refereeing decisions involving his side this season.

Although, it may well be part of a way of building a siege mentality for his players to feed off, the Chelsea manager has annoyed a fair few neutral observers with his talk of a "campaign" against his club.

The club's official website decided to get in on the act, backing their manager by focusing on the numbers of penalties awarded to the Blues this season in the Premier League.

The argument is based on the number of spot kicks given to the team over the past five seasons, and yes two penalties compared to 12 in 2009-10 is noticeably low. In fact, the website uses the term "abnormally low" to describe the anomaly.

But it does not automatically mean a conspiracy.

However, the club does try to put the spotlight on a few incidents they think should have gone their way, including flashpoints involving Diego Costa, Cesc Fabregas, John Terry and Branislav Ivanovic. 

The Blues also seem a little sensitive of any accusations that they may be defensive at times by highlighting their scoring statistics to shore up their argument:

"So this season’s tally of two unquestionably bucks the recent trend yet our position as clear league leaders and second-highest scorers suggests we can’t be labelled anything other than an attacking side, spending plenty of time in the opposition box."

Here is the basis of Chelsea's argument.

Premier League penalties awarded to Chelsea

2014/15 – 2

2013/14 – 7

2012/13 – 11

2011/12 – 5

2010/11 – 8

2009/10 - 12