Christian Pulisic won't play any further part of AC Milan's December matches.

Pulisic suffered a torn calf muscle in Friday's 2-1 loss to Atalanta, which will sideline him for multiple weeks, AC Milan announced. The U.S. men's national team star was replaced in the 37th minute of Friday's match and unfortunately will miss the Rossoneri's final matches of the calendar year.

Despite Rossoneri manager Paulo Fonseca admitting postmatch that the injury didn't look "too serious", 26-year-old Pulisic will face his first sidelined spell of the season.

Pulisic has been one of AC Milan's best players this season, totaling eight goals and six assists in 19 combined appearances. The Pennsylvania native has helped the Rossoneri remain near the top six in Serie A, while also picking up crucial league phase results in the UEFA Champions League.

The Rossoneri have four final matches this year, with three of those coming in domestic play.

AC Milan faces Red Star Belgrade in UCL play on Wednesday before Serie A matches against Genoa, Hellas Verona, and AS Roma.

Pulisic's absence comes during an open period for the USMNT, who won't be back in competitive action until March 2025.