The Frenchman is a doubt for Bayern Munich's midweek European fixture after missing out on Pep Guardiola's side's clash with Mainz on Saturday Bayern Munich have revealed that winger Franck Ribery is a doubt for Wednesday's Champions League clash with Viktoria Plzen on Wednesday. The 30-year-old has been a key part of Pep Guardiola's side this season but did not feature against Mainz on Saturday after the club's press officer Markus Horwick confirmed the Frenchman is struggling with his fitness.