Karius has come under major scrutiny after his errors saw the Reds suffer a 3-1 defeat to Real Madrid in Kyiv, handing the Spanish side two goals.
The first came when he rolled the ball too close to Karim Benzema, with the striker opening the scoring with an opportunistic effort, before fumbling Gareth Bale’s long-range shot late on.
Shortly before Benzema’s goal, however, Karius was left sprawled in the box following a collision with Real defender Sergio Ramos.
Ramos appeared to have deliberately elbowed the stopper in the side of the head during a Real corner, with Karius’ appeals falling on deaf ears.
The officials’ lack of concern was mirrored by UEFA, who declined to investigate both that issue and Ramos’ challenge that left Mohamed Salah unable to play down due to a shoulder injury.
Now, ESPN‘s Mark Ogden reports that Karius was ordered to undergo a scan to determine whether he had experienced head trauma, with Liverpool concerned he had a concussion.
Crucially it is stressed that this was at the club and FSG’s behest, with Karius travelling to Boston on May 31 to visit a specialist, before a planned break in California.
The result are unclear, and it may seem a convenient development given the level of criticism aimed at the German, but it is not unfeasible he was concussed.
Ogden adds that Karius is due to join up with the Liverpool squad for pre-season training on July 2.