Kevin De Bruyne produced a shocking tackle on Belgium team-mate Adnan Januzaj during training on Thursday.
According to DH.be , De Bruyne said sorry to Januzaj after the training session. The 23-year-old appeared to accept the apology while leaving the pitch with a slight limp.
Such was the shock of De Bruyne's challenge, Belgium boss Roberto Martinez was asked about the incident in his press conference.
"The intensity of training is like a match, we need that intensity," said Martinez. "It is not the intention to injure someone, but we train on the edge of the cut."
It was a risky challenge by De Bruyne with Belgium's opening World Cup game coming against Panama on Monday.