Struggling Monaco followed up the signing of Cesc Fabregas by reinforcing their midfield with Frenchman William Vainqueur, joining on loan from Antalyaspor until the end of the season.
Vainqueur, 30, currently has a calf problem but Monaco said on Saturday they had been won over by the motivation of the former Nantes, Standard Liege, Dynamo Moscow and Roma player.
The arrival of the ex-France Under-21 international, who had a loan spell at Marseille in 2016-17, comes after Spain international Fabregas signed on Friday.
Coach Thierry Henry is under pressure with Monaco second-bottom in Ligue 1, five points adrift of the safety zone.