Chelsea remind mount and first team squad of responsibilities after breaking coronavirus self isolation

I think there may be some confusion here!

To clarify, Mason Mount, a professional footballer who plays for Chelsea FC, did not break coronavirus self-isolation. In fact, he was one of the players who was forced to self-isolate after coming into contact with someone who tested positive for COVID-19.

As a result, Mount was unable to play in Chelsea's match against Southampton on October 3, 2020, and was also absent from the team's training sessions.

It's worth noting that the Premier League and the UK government have strict protocols in place to prevent the spread of COVID-19, including self-isolation for individuals who have come into contact with someone who has tested positive for the virus.

So, to answer your question, Chelsea FC did not need to remind Mount and the first-team squad of their responsibilities after breaking coronavirus self-isolation, as Mount was simply following the necessary protocols to prevent the spread of the virus.