Juve striker Mandzukic ruled out for a month

Mandzukic suffered the injury in Wednesday's 3-0 win over Inter Milan in the first leg of their Italian Cup semi-final, with Juve putting the timeline for the Croat's recovery at "four weeks".

The 29-year-old is likely to miss Juve's game against Serie A leaders Napoli on February 13, and is also a doubt for the home leg of their Champions League tie against former club Bayern 10 days later.

Mandzukic made a slow start in Italy following his close-season move from Atletico Madrid, but the Croat has since settled in Turin and has scored nine goals in 22 appearances this season.

Juve are seeking a fifth successive Scudetto and Massimiliano Allegri's second-placed side are just two points behind Napoli following a run of 11 straight wins.