It would be recalled that he joined the Russian club after his exit from Inter milan and became the highest-paid player in the world – earning a reported €300,000 (£167,825) a week.
Well, that's changed now, Eto'o's contract with Chelsea is put at €6m (£5.1m) per year making Lionel Messi (£13.7m) the highest-paid player in world football.
The Cameroonian wrote on Chelsea website, "I am very happy to be here but also anxious because I want to get playing as soon as possible, It wasn't a hard decision. I saw the qualities Chelsea have, and I was very happy with Jose Mourinho before, so when the opportunity came, I was very happy to take it."