Chelsea is collecting information as part of an appeal of the red card given to midfielder Nemanja Matic during Saturday's drew with Burnley, reports The Telegraph.
Matic pushed Burnley's Ashley Barnes to the ground after the Clarets forward delivered an aggressive tackle in which his foot landed high on Matic's shin.
Chelsea manager Jose Mourinho and the club reacted strongly against the call, and The Telegraph reports they are disappointed by the Football Association's decision to not retroactively punish Barnes.
Chelsea has until 8 a.m. ET Monday to submit its evidence to the association. Unless the appeal succeeds, the 26-year-old Matic will miss the Capital One Cup final against Tottenham on Sunday, as well as Premier League matches against West Ham and Southampton.
Mourinho has defended Matic, saying Barnes' tackle was "criminal," according to BBC Sport.
"It could be the end of Matic's career. A criminal tackle. Matic is a very lucky guy," Mourinho said.
"Another club would have the power to appeal Matic's red card."
"Football is about emotions and clearly Nemanja Matic had a reason to lose his emotions," Mourinho said.
"What are the consequences of his push? Nothing. The consequence for Matic from the tackle? It could be the end of his career.
Mourinho also referenced Diego Costa's three-game ban for stomping on the leg of Liverpool midfielder Emre Can in January, saying, ""If you call Diego Costa's actions against Liverpool a crime, the minimum you have to say is this is a criminal tackle."
Chelsea defeated Liverpool 1-0 on Jan. 27 to reach the Capital One Cup Final. The Blues are leading the Premier League by a five-point margin over Manchester City.
- Mike Fiammetta