Both limped off during Saturday night's 1-0 defeat at Palermo and today the club announced the medical examinations.
"Pato has a slight sprain to the left ankle and is expected to recover in around 10 days," read a statement.
"Jankulovski sprained his left knee with a strain of both the medial collateral ligament and anterior cruciate ligament.
"There will be further evaluations over the next few days."
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