Midfielder Franck Ribery looks set to miss France's World Cup play-off against Republic of Ireland with a knee injury.

The Bayern Munich player is likely to be sidelined for a month after consulting professor Jean-Henri Jaeger in Strasbourg.

The doctor confirmed the 26-year-old has tendinitis of the patellar tendon in his left knee and needs to rest for four weeks, according to www.lequipe.fr.

His absence would be a blow for Les Bleus ahead of the games on November 14 and 18, which will determine which team will travel to South Africa next year.