The Ligue 1 crown appears to be destined for Bordeaux or Marseille with third-placed Olympique Lyon seven points behind the leaders.
"If we win at Valenciennes, we can aim for the title," Bordeaux and France midfielder Alou Diarra told reporters after a 3-0 home victory against Sochaux on May 3.
"Our winning streak is quite interesting and hopefully we will extend it but we don't have any psychological advantage over anybody," Blanc warned his players.
"We simply must win at Nice," coach Eric Gerets told reporters on Monday.
"If we lose and Bordeaux win (at Valenciennes), our game against Lyon will be far less important for the end of our season. But I think the title race won't be settled this week," he added.
"It had to happen. We have lived seven incredible seasons," Lyon captain Juninho told RMC radio.
