Diego Costa has penned a heartfelt open letter to Chelsea supporters on social media after completing his move away from the club to Atletico Madrid.
The Liga side confirmed on Tuesday that they had wrapped up a deal to bring the Spain international back for a second spell.
Later that day, Costa posted a message to the fans of his former club on his official Facebook page, per Sky Sports:
"Some cycles begin while others end. My cycle at Chelsea began three years ago - three remarkable years in all aspects - and I will never forget it.