 Complete the following phrase:  On 31 January 2007, Cole suffered a serious knee injury in the 30 victory over Blackburn Rovers in a Premier League game at Stamford Bridge, although after a scan it was revealed to be not as bad as first thought, with Chelsea optimistic that he would return before the end of the 200607 season. Cole did indeed make a return at the end of the season, playing in the last twelve minutes of the 