The Italian club AC Milan has raised significant concern after their new player Ardon Jashari suffered a serious injury during the team's training on Thursday morning, which may keep him out of action for a long period.

The 23-year-old Swiss international joined the Rossoneri in a deal worth 37 million euros from Club Brugge, but he suffered a strong collision with teammate Santiago Gimenez during practice, leading to an immediate halt in his participation.

Coach Massimiliano Allegri confirmed in the press conference ahead of the team's match against Lecce on Friday that Jashari will not be available for upcoming matches due to the injury.

According to media reports, including Sky Sport Italia, the injury may be to the fibula, raising concerns about its severity.

The newspaper La Gazzetta dello Sport indicated that Jashari's absence could last at least two months, as he undergoes further medical examinations to determine the extent of the damage.

This injury comes at a sensitive time, especially since Jashari is considered the most expensive signing in Serie A during the current summer transfer window.