Defending champions Lille have drawn 0-0 at home to improving Saint-Etienne in the French league, and in a double blow lost key midfielder Renato Sanches to injury.
The Portugal international went off midway through the first half with a left thigh injury on Friday.
He is now in doubt for the Champions League match at home to defending champions Chelsea on Wednesday, with Lille trailing 2-0 from the first leg in the round of 16.
It was a fifth league game in a row for Lille without conceding a goal but also a missed opportunity to move closer to fourth place and an automatic Europa League spot.
Lille are three points behind fourth-place Rennes, having played an extra game.
Saint-Etienne coach Pascal Dupraz is continuing the club’s improvement and the draw moved Les Verts up to 16th spot ahead of this weekend’s games.