Eto'o, who has scored 68 goals for the Spanish side since signing from rivals Real Mallorca in 2004, will be out for up to five months after undergoing surgery to repair a torn meniscus in his right knee suffered during Wednesday's 1-1 draw against Werder Bremen.
Lin, who rose to prominence in February when he averaged 20.9 points and 8.4 assists and led the Knicks to seven straight wins to save a team in a tailspin, said he will have surgery early next week to repair the small chronic meniscus tear in his left knee.