Bournemouth striker Enes Unal has suffered a tear to the anterior cruciate ligament in his right knee during a training session, the club have confirmed.
Unal, 27, signed for the Cherries permanently from Getafe on a four-year deal last summer, having joined on loan in the January transfer window.
The Turkey international, who has made 17 appearances this season and scored two goals, picked up the contact injury in a routine drill on Tuesday.
Unal joins Bournemouth's record signing Evanilson on the sidelines, after the Brazilian striker had surgery on his broken foot.