RB Leipzig coach Ralph Hasenhuttl reportedly called off a training session on Monday after a dangerous tackle from Liverpool target Naby Keita on team-mate Diego Demme.
According to Bild (h/t Luke Brown of The Independent), Demme was left "screaming" after the challenge and left the field with his knee bandaged. Hasenhuttl is said to have demanded an apology from the Guinea international and Keita agreed to.
As noted by Brown, the Reds have been linked with a big-money move for Keita, although it's suggested they are unlikely to sign him this summer.
Here's a clip of the aftermath of the tackle:
As we can see in this footage, Keita and his midfield partner appeared to tangle moments before the challenge in question:
According to Sky Sports News' Kaveh Solhekol, Demme has been left with a "bruised knee, but his meniscus and ligaments are fine.