Liverpool manager Jurgen Klopp believes a suspected concussion suffered by Loris Karius in the 2017-18 UEFA Champions League final against Real Madrid influenced the goalkeeper's performance.
The Germany international was culpable for two of Los Blancos' goals in the 3-1 win for the La Liga side, first rolling the ball straight to Karim Benzema and then letting Gareth Bale's strike from distance squirm through his hands.
Since the final, Karius had tests at a hospital in Boston where it was said he had suffered a concussion after an earlier clash when Liverpool defender Virgil van Dijk nudged Sergio Ramos into the goalkeeper early in the second half.