The Senegalese international fell awkwardly in the Reds' 1-1 draw against Bayer 04 Leverkusen on Matchday 24 and is set for surgery on Thursday morning. He will be operated on by shoulder specialist Prof. Dr. Helmut Lill in the Friederikenstift hospital in Hanover.
Reds in a rut
The 26-year-old has played in 19 Bundesliga games this season, scoring eight times. However, he has netted just once in his last five appearances, in which his team have taken just two points, leaving them just six points ahead of the relegation play-off place.
The Lower Saxons travel to Hertha Berlin in their next league outing, before hosting Borussia Dortmund at the HDI Arena on Matchday 26.