Angers coach Stéphane Moulin is confident he won't lose Cheikh N'Doye this month.
The Senegal midfielder is on the shopping list of Crystal Palace boss Alan Pardew and has been watched by Chelsea and Manchester City.
Le 10 Sport says Chelsea are stepping up their interest this week.
However, Moulin says: "Cheikh N'Doye has made a fairly linear progression since he arrived in France.
"He's never left a club during the winter break and I do not see why it would change now."