"I cannot say too much about it. Other people are working on it," said Klopp.

"What I can say if it was our fault alone then probably we need to get punished.

"It didn't happen on purpose but my only real concern is the player. He had already a problem, Pedro, that he could not play half a year in Spain and if he were not allowed to play now until it is sorted that would be the biggest problem.

"How it is in life, we make a mistake – I am not sure we really made a mistake – but if then it is like this but the player should not be punished for that."

EFL rules give it "full powers" to investigate, which could mean anything from a reprimand to expulsion from the competition, although the latter appears unlikely.