AS Roma defender Rick Karsdorp will have to undergo surgery after sustaining a torn meniscus, the Serie A club said on Saturday, with Italian media reporting the Dutchman could be out of action for 30-45 days.
The 27-year-old, who has made four appearances in Serie A and one in the Europa League this season, picked up the injury during Thursday's 3-0 home win over HJK Helsinki in the group stage of the second-tier European club tournament.
"Medical examinations have confirmed that defender Rick Karsdorp has suffered a tear to the meniscus of his left knee," Roma said in a statement.
Roma are fifth in the table on 13 points and host second-placed Atalanta on Sunday.