The Potters are currently one point above the drop zone and will need reinforcements to ensure they remain in the Premier League for the 11th year-in-a-row.
"(Chief executive) Tony Scholes will deal with that side of things," said Lambert. "We have spoken about players and there is players we think can help, but January is a really difficult month to bring the right type of people in."
Asked whether he had watched Ndiaye, Lambert said: "I have looked at a number of players since I came here. There is a number of lads we have looked at and who we think can help us. If we can get one or two in, then great."