Inter Milan midfielder Patrick Vieira could face another lengthy spell on the sidelines after sustaining an injury in his side's 2-1 UEFA Champions League win over CSKA Moscow. The France midfielder is suspected to have damaged his right calf, according to Calcio Italia magazine. Further tests will be carried out to determine the extent of the injury, but initial reports say Vieira could be out of action for around two months. The 31-year-old will be left ruing his bad luck as he has just recovered from an injury that sidelined him for a month.