Manchester City have been handed a huge boost in the title race by the FA, as they've decided to charge Diego Costa with violent conduct following his actions against Liverpool in the Capital One Cup semi-final second-leg.
Michael Oliver was the man in charge as Costa was accused of stamping on Liverpool's Emre Can during the fiercely-fought League Cup semi-final second leg on Tuesday night.
Costa was also involved in an altercation with defender Martin Skrtel, as well as going head to head with Steven Gerrard, but it's the incident with Can that could see him suspended for the huge top of the table clash.
According to BBC Sport, the FA have taken retrospective action given that Oliver didn't see the stamp in question, and that means he could be missing for up to three-match if a ban is handed down.
Costa relished the physical stuff
Since signing from Atletico Madrid last summer Costa has thrived in the hustle and bustle of the Premier League, and City's chances of taking maximum points from Stamford Bridge would increase hugely without the Spanish international on the pitch.
When the two sides met earlier this season Costa was involved in a number of challenges with City's Pablo Zabaleta; eventually the defender was sent off.
Costa is a ticking time bomb
Costa's fiery performance against Liverpool came as no surprise to anybody who has watched the Brazilian-born forward closely this season. Since his summer arrival he's not been afraid to put himself about and his mix of ruthless aggression, pure strength and expert finishing has seen him rocket to the top of the Premier League goalscoring charts in his debut campaign.
While some fans and pundits have taken issue with his on field behaviour, Costa's critics have only boosted Mourinho's insistence that there's some kind of media campaign against his Chelsea squad.