BY, Just looked Mr Anelka - and you're right. It seems though that he put in a transfer request - from the Wiki: '...Anelka scored Chelsea's first goal of the 2011–12 season against West Bromwich Albion in a 2–1 victory. However, this would prove to be Anelka's final goal for Chelsea as he failed to find the net in 14 further appearances in 2011. On 3 December 2011 after Chelsea's 3–0 victory against Newcastle United, manager André Villas-Boas confirmed to the media that Anelka along with Alex had submitted transfer requests to the club and would be free to leave Chelsea in January....'
...looks like the treatment he received after he handed in the request was a bit harsh though.