Lyon, whose seven-year spell at the top of Ligue 1 was ended by Girondins Bordeaux last May, qualified for the knockout stages of the showcase European club competition with a 1-1 home draw with Liverpool on Wednesday.
Marseille, who were seen by many as Ligue 1 title favourites but have not quite lived up to high expectations so far, strongly suggested they could threaten Lyon at their Gerland Stadium by thrashing Zurich 6-1 on Tuesday.
"We didn't have many more chances than in our previous matches but we scored a lot more goals and that's encouraging," Marseille midfielder Benoit Cheyrou told reporters.
"It is a fact that neither Clerc nor Reveillere or Pjanic will play on Sunday," Puel told reporters.
"To have qualified (in the Champions League) is a great satisfaction but I can tell you that the players finished the match very tired, both psychologically and physically, and we have another important match coming," he added.
"The match in Munich showed that we are capable of getting good results in away games by making the most of few scoring chances," Blanc told reporters.
