Well, the Spain international has long been linked with a move away from Stamford Bridge and he was said to be close to a transfer to China during the January transfer window – however no move materialised.
But now the 28-year-old is ready to make the move to Asia where he would work under Fabio Cannavaro and alongside Axel Witsel on a reported £650,000-a-week deal – after tax – after a rollercoaster stint in the Premier League.
While supporters may not have been happy with his attitude at times, they will know that he would be a huge loss.
His 19 Premier League goals this term look set to fire the Blues to the title, while he has scored 57 goals in 115 appearances in all competitions for the Blues since joining them from Atletico Madrid in 2014.
Costa offers far more than just being a prolific marksman though, and he gives defenders a huge problem with his never-say-die attitude and strength to hold the ball up, and Antonio Conte will need to find a replacement that can do a similar job if the Spaniard leaves for pastures new.
Well, they have been heavily linked with both Everton striker and former Blues star Romelu Lukaku, and Real Madrid attacker Alvaro Morata so it would be a surprise if it isn’t either one of those two.
They certainly both have the ability and physical presence to effectively fill in for the Spaniard.
Well, it seem as though Costa has made his mind up that now is the time to go and Chelsea must start searching for a replacement that will bring them as many goals as they return to the Champions League group stages next term.