Chelsea boss Antonio Conte has registered Diego Costa in his Premier League squad.
The rebellious Spaniard has been itching for a return to Atletico Madrid after being dumped by Blues boss Antonio Conte over text.
Costa, 28, is in his hometown of Lagarto in Brazil and is being fined £300,000 for every fortnight of his absence.
Chelsea and Atletico are hopeful a deal can be done to allow the Brazil-born striker to return to Madrid, although the fee is still a big issue.
The Premier League champions want £50m for a striker who cost them £32m three years ago.