Liverpool goalkeeper Simon Mignolet sent his best wishes to Vincent Janssen after flattening the Tottenham striker during Belgium's friendly in Holland.
Janssen was forced off in the first-half of the 1-1 draw in Amsterdam, shortly after his heavy collision with Mignolet as they contested a high ball.
He suffered a 20-minute loss of memory according to Dutch boss Danny Blind.
The Belgium 'keeper raced from his goal and won the ball with a clean punch but his momentum carried him into Janssen, who tried to continue but had be replaced.