Bayer 04 Leverkusen midfielder Kevin Kampl is set for a lengthy spell on the sidelines after being diagnosed with a fractured fibula.

The Slovenia international picked up the injury during his side's 1-0 defeat to Borussia Dortmund on Matchday 22 and missed the subsequent 3-1 loss at 1. FSV Mainz 05 on Sunday with what it was originally feared was just a muscular injury.

Playercard: Click here for Kevin Kampl's season stats

Further tests carried out on Monday revealed greater damage than first feared, with the lower part of Kampl's left leg placed in plaster. The 25-year-old has been an almost ever-present for Die Werkself this season, making 19 Bundesliga appearances following his arrival from Borussia Dortmund last summer.

Leverkusen welcome SV Werder Bremen in the Bundesliga on Wednesday.