The son of Chelsea manager Jose Mourinho has blasted the Blues' supporters for their treatment of Cesc Fabregas during Sunday's 1-1 draw against Southampton.

Fabregas was singled out by some fans for under-performing in the Premier League clash, but Jose Mario Mourinho, 15, believes that criticism of the Spanish international, who has not scored or assisted a goal in his last 10 games, is extremely unfair.

"Why is everyone hating and blaming Fabregas for Sunday's performance... It was a team effort," Jose Mario, who is a youth goalkeeper at Fulham, wrote on his Instagram page.

"Fabregas might have not played as well as most expected but at least he kept fighting... Showed a lot of character, I've seen bad Chelsea fans but Sunday was the worse I've ever seen, Fans booing Cesc not singing at all, I completely agree with the chant 'Mourinho's right, you're fans are s****. Our fans are a disgrace!!!!"

Jose Mario has been a regular at Stamford Bridge this season.