Rumours have been circulating that Costa could be tempted by a move to the Chinese Super League, while others claim he will return to Atletico.
Whatever the case, Pundits have been speculating which players could replace the goal machine at Stamford Bridge.
So I decided to pick the top 5 popular picks amongst football pundits around the world and compile them into a quick list.
ALSO SEE: Four Chelsea players Arsene Wenger claims he nearly signed
Let’s take a look at the 5 Players Top Football Pundits Say could replace Diego Costa
Long linked with a return to his former club after failing to make it at Stamford Bridge earlier in his career, he is one of the most talked about transfer targets amongst pundits, pure speculation, however, Lukaku has rejected a couple of contract offers with Everton, so you never know.
The top scorer in Serie A so far this season with 14 goals, Mauro Icardi is having one of his best seasons in an Inter Milan shirt.
Targeted by Chelsea for much of the summer, Alvaro Morata made the surprise move back to Real Madrid after two years with Juventus.
A huge talent catching the eye of top clubs after his prolific form with Celtic, Moussa Dembele is one name to be mentioned as on Chelsea’s radar in recent months.
Dzeko has 13 goals so far this season and is a similar style of player to Costa, so could prove ideal for the kind of side Conte is trying to build.
ALSO SEE: Four Chelsea players Arsene Wenger claims he nearly signed