Hamburg forward Michael Gregoritsch sustained an ankle injury after clashing with teammate Ivo Ilicevic in training and is set to miss the match against Cologne on Sunday.
Gregoritsch, 21, was stretchered off the pitch after sustaining the injury when fouling Ilicevic, 29, during the session on Thursday.
Illicevic did not take kindly to the challenge, however, headbutting the Austria under-21 international shortly before he then received treatment to his ankle.
THE BEST OF ESPN FC
- Delaney: Mourinho is Man United's only option
- Evans: Oscar, not Terry, vital to Chelsea's future
- Lowe: Neville aware of his Valencia situation
- Moran: Mexican goalkeeping at a crossroads
- FIFA: Scandal FAQs | Dall: Prem spotlight
- Previews: Barca must stay hungry | Chelsea-Man Utd
- FC TV: Neymar tops Ronaldo? | Players and Pep? | Prem race
- News | Transfer | Toe Poke | Fantasy | FC TV | Podcast | MLS
"They might have overstated their...