I agree about the Lens which have the worst start of the season but now on recovery with unbeaten in last seven games with three wins and four draws mean things are coming back on right path which works for them in last season, and they are able to secure their spot into Champions League, but now recent success give them good chance for having fight back for the best even still need more improvement and increase in performance as well which will allow them for go through.
Now they are going to host Nantes which is having impressive start of the season and currently at the seventh spot with four wins their away record is not good which will give Lens a fair chance for the full three points and having improved into their rank which is currently just above relegation jail.
Although lens is gradually showing some level of improvement in their recent performance, they still need some good moves ahead because they have just a point different with Metz who is in the relegation zone, so it's more likely they are a point away from relegation, they only have some goal difference to their advantage, if they loose this game against Nantes, they will be at risk of falling back so they need at least a draw.
If Nantes draw, depending on how many goals they get they will either be at the fifth or sixth position because they currently have fourteen points and a draw means an extra points which Makes them have fifteen points same as breast currently so they will have goal difference to determine who stays at the fifth position but a win for Nantes takes them well above by seventeen points.