The club have never won the league before but have overhauled Paris St Germain to lead the French title race.
“We stay cautious in front of the cameras, but of course we’re thinking about it.
“When I talk to people from other cities, they tell me they thought we were going to crack. But the more it goes on, the more people see us as being capable of causing Paris a problem. We mustn’t get carried away, but the squad’s mature enough to handle it.”