MILAN, Nov 21 (Reuters) - Inter Milan's Argentine striker Julio Ricardo Cruz faces a lengthy lay off after tests found he had suffered damage to the internal collateral ligament of his right knee.
Cruz suffered the injury during Sunday's 1-0 Serie A win over Reggina and underwent a scan on Tuesday, Inter said on their website.
Inter did not give an estimate for how long the forward would be sidelined for but Italian media has suggested Cruz could be out for up to two months.
Inter, who face Sporting Lisbon in Champions League Group B on Wednesday, have Argentine Hernan Crespo and Swede Zlatan Ibrahimovic as their first choice strikers.
Brazilian Adriano returned from a month's rest and rehabilitation on Sunday while Uruguayan Alvaro Recoba is another attacking option avaliable to coach Roberto Mancini but is currently suffering from a calf injury.