@physioscout They didn't pick this up on the commentary or half-time analysis either, but it appears to be a knee rather than ankle injury from the replays.
@physioscout If you look at the replay from the other angle, the Egypt player (accidentally) strikes Bos on the knee with his forearm. This causes a hyperextension of the knee while his foot is planted, explaining why he is holding the knee. What type of injury is this likely to cause?