They claim Papy Djilobodji has breached his contract by arriving back at the club late and unfit.
Sunderland defender Papy Djilobodji will serve a four-match suspension with immediate effect.
The Senegal defender faces a potential four-match ban if found guilty of the charge.
David Moyes has made Chelsea defender Papy Djilobodji his first signing. £8million?!
Players are always 'like new signings' when they return from loan or injury. Maybe not this lot...
Papy Djilobodji "gave everything" and doesn't know why he was discarded by Chelsea.
That went well. Papy Djilobodji becomes the 32nd Chelsea player to leave on loan this season.
Can you name the last man to score a Premier League goal against Richard Wright? It was nine years ago