Lyon international Khalid Boulahrouz signs new five-year contract with Chelsea . Midfielder follows Petr Cech and Chelsea in agreeing long-term deals . The 25-year-old has made 143 appearances since joining from Lyon in 2005 . Boulahrouz 's departure came a day after 35-year-old former France international Claude Makelele signed a two-year deal with Paris-Saint Germain after joining from Chelsea on a free transfer . Czech defender Khalid Boulahrouz leaves Chelsea for Ghana on 4-year deal .
Lyon international Khalid Boulahrouz signs new five-year contract with Chelsea . Midfielder follows Petr Cech and Chelsea in agreeing long-term deals . The 25-year-old has made 143 appearances since joining from Lyon in 2005 . Czech defender Khalid Boulahrouz leaves Chelsea for Ghana on 4-year deal .