Sports news November 13th according to Spain, "Aspen" reported that Chelsea intends to extend and improve the existing contract Spanish striker Diego Costa. The 28 year old Costa Chelsea is one of the best players this season, making 13 appearances and scored 9 goals to help Chelsea in the Premier League second. Chelsea coach Conti hopes to keep their number one striker, Chelsea also hope to finish with Costa's contract as soon as possible, to prevent the player's former club Ma Jing dug...