Tottenham’s Dutch striker Vincent Janssen suffered ‘a 20 minute loss of memory’ after a clash with Belgium goalkeeper Simon Mignolet in Wednesday night’s international friendly, it has been revealed.

Janssen suffered the injury in the first half of the 1-1 draw in Amsterdam when Mignolet came out to clear a short back pass from Laurent Ciman and clattered into the onrushing striker.

Janssen was forced off shortly afterwards and Holland manager Danny Blind has confirmed the 22 year old had suffered memory loss after the incident.