 Complete the following phrase:  Collins signed a four-year contract with Aston Villa for an undisclosed fee on 1 September 2009, the last day of the transfer window. On his league debut for Villa, on 13 September, he helped them keep a clean sheet in the Second City Derby against Birmingham City. His first goal for the club was the winner against Chelsea in a 21 victory, in which he was named Man of the Match. Collins played the full ninety minutes of the 