The Boro star collided with Barcelona’s Mark van Bommel during a training match and both players were said to sustain ‘serious looking’ injuries. It is thought that Boateng has injured ligaments in his knee, but he will require tests before the extent of the injury is fully known.
It will be a major blow if Boro are without the influential midfielder for any length of time. Last season while he was missing through injury Boro played 14 games in the Premier League and picked up just 10 points. They were also knocked out of the FA Cup and UEFA Cup during his spell out.