Nigerian born-American International Folarin Balogun has been ruled out of action for three months.
The skilful attacker sustained a dislocated glenohumeral joint in his left shoulder in early October.
The 23-year old returned to action after missing 2 matches but will need to undergo a surgery.
“Folarin will undergo surgery in the next few days and will be out for around 3 months”, the team coach Adi Huetter.
Balogun has scored 3 goals in 10 matches in all competitions for Monaco this season.