The Barcelona midfielder was linked with moves to both Arsenal and Chelsea last summer but he ended up staying at Barcelona.
There is bound to be plenty of fresh speculation linking Chelsea with a number of new players in the coming weeks and months as the summer transfer window draws ever nearer.
And the fact that Costa was hanging out with Turan this week is only going to fuel suggestions that the Blues could be interested in a summer swoop for the Turkey captian.
Costa posted the picture above on his personal Instagram account and wrote the caption: “My bro arda turan!!!el craque ⚽️”
Chelsea are currently gearing up for their Premier League clash against Burnley at Turf Moor on Sunday afternoon.
The Blues are currently flying high at the top of the Premier League table as they bid to win the title in Conte’s first season in charge.
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