Thiago Motta may be out until 2018 after Paris Saint-Germain announced the veteran requires minor knee surgery.
According to a statement released on the PSG website, the 35-year-old has complained of increased pain in his right knee since the 0-0 Ligue 1 draw at Montpellier in September.
The Brazilian-born Italy international has started 12 matches for Unai Emery's team in all competitions this term.
But, should he go under the knife imminently to address the issue, Motta may not return until after the mid-season break.
Leading Group B in the Champions League by three points, PSG hosts Celtic in Europe next week, followed by a trip to take on title-holder Monaco, who are four points behind them in second place in the league, four days later.
It is also away to Bayern Munich on December 5, with a Ligue 1 clash at home to Caen the team's final competitive game of 2017.
PSG do not then play again until the Coupe de France in early January 2018.
- New Zealand vs South Africa LIVE SCORE, World Cup 2023 warm-up: NZ 14/0 in 3 overs vs SA
- Athletics LIVE updates, Asian Games 2023: Next session starts at 4:30pm; Vithya equals national record to qualify for women’s 400m final; Hangzhou 2022 streaming info
- Kabaddi Live Score, Asian Games 2023: India leads Chinese Taipei at halftime in Women’s Group A, Streaming info and updates
- Asian Games 2023 LIVE updates, Hangzhou 2022 medals tally: Satwik-Chirag win, Indians pick three medals on October 2
- England vs Bangladesh LIVE SCORE, World Cup 2023 warm-up: BAN 18/1 vs ENG; Topley gets Litton