Florian Wirtz is set for a spell on the sidelines after sustaining a capsular injury to his right ankle while on international duty with Germany. (More Football News)
The midfielder suffered the injury during Germany's 1-0 victory over the Netherlands in the Nations League on Monday, being replaced at half-time by Bayer Leverkusen team-mate Robert Andrich.
Leverkusen confirmed the 21-year-old underwent an MRI scan on Tuesday and is receiving treatment. However, the club also confirmed it is unclear when Wirtz will return to training.
He is a doubt for their return to Bundesliga action against Eintracht Frankfurt on Saturday, with a Champions League meeting with Brest following that next week.
Wirtz, who was named the Bundesliga Player of the Season last campaign, has been an influential figure once again for the champions this term.
He is their joint-top scorer with four goals (along with Victor Boniface) in the Bundesliga and has created the joint-most chances (19, level with Alex Grimaldo). His 18 dribbles completed is also a team-high, boasting a 48.65% success rate (37 attempted).