Wolves scouts have been active in the Ligue 1 market in recent weeks.
Le 10 Sport says a Wolves scout was present to see Lille win 1-0 at Montpellier on Tuesday night.
The subject of their interest were three LOSC players - Nicolas Pepe, Zeki Celik and Xeka.
Attacker Pepe scored the winner on the night, while Portuguese midfielder Xeka and Turkish fullback Celik also featured.
All three Lille stars are being considered by Wolves for the January market.