Thirty-year-old netted 59 goals in 237 matches for the Hammers between 2007-13.
West Ham United have confirmed that former front man Carlton Cole has re-joined the east London club on a short-term three-month contract, according to reports in the Daily Mail.
The former England international left Upton Park at the end of the previous campaign after his deal with the Hammers had expired and he was not offered an extension by the club.
However, after failing to find himself a new team over the course of the summer, Cole has now decided to re-sign with West Ham until Jan 13 after taking part in a behind-closed-door friendly against Charlton Athletic last week in order to prove his fitness to head coach Sam Allardyce.
“I’m in an excellent mood, am happy to be back and can’t wait to get working with the lads again and start my season off,” Cole told West Ham TV.
“I’ve been working hard with the strength and conditioning coach Mathew Monte-Colombo in the gym and he’s been really hands-on with me to get me up to standard to train with the team and get my match-fitness up as quickly as possible with a view to signing.
“I feel fit and raring to go and it’s time to start knocking on the manager’s (Sam Allardyce) door to get some games under my belt.”