Liverpool were comfortable winners against Villarreal at Anfield in their Europa League semi final on Thursday.
An own goal, and then goals from Daniel Sturridge and Adam Lallana saw them to a 3-0 win as the Reds dominated from start to finish.
The Yellow Submarine seemed to lose their cool in the tie, picking up several yellow cards, a red for Victor Ruiz and generally struggling to deal with Liverpool throughout.
Marcelino though, claims his side would always have struggled as the referee was not equal, as he allowed Liverpool to play on the margins of the rules.
"I don't think the refereeing was quite equal for both sides,” the Daily Star reports him saying.
"It was tough against an opponent who played with a huge amount of intensity, maybe on the margins of the rules at times but it was allowed.”
Liverpool now take on holders Sevilla in the final of the Europa League in two weeks time.
The Spanish side have won the competition for the last two years and will be determined to make it a third successive win.
They are likely to head into the tie as the favourites, but after such an impressive run, Liverpool will also fancy their chances of enjoying their first success under Jurgen Klopp.