"I feel fit and I have no more problems," the Peruvian international said after coming through a training session on Sunday.
Dutchman Roy Makaay, Pizarro's regular partner up front, returned for Bayern in Saturday's 2-1 win at home to Borussia Moenchengladbach.
Both Makaay and Pizarro missed Bayern's 4-2 defeat in the quarter-final first leg in London last week.
Their return would be a huge boost to the German side's chances of staging a recovery.
Pizarro scored two of the goals in the side's 3-1 win over Arsenal at the Olympic Stadium in the last round, while Makaay has notched seven goals in the Champions League this season.
