Jurgen Klopp did not expect Manchester United's Marouane Fellaini to receive a retrospective ban for appearing to catch Liverpool midfielder Emre Can with an elbow during last week's Europa League tie.
Fellaini and Can clashed during the final moments of the Anfield match, where Liverpool claimed a dominant 2-0 win that they will defend in the second leg of the last-16 tie at Old Trafford on Thursday.
"Surprised he's playing? No," Klopp said of Fellaini.
"It was a situation with different views. A lot of people at UEFA have said it was a normal situation.
"They gave me three games for my face in Naples. But that was a long time ago."
"He's in a really good way," he said. "But I want him concentrated on football, not on what people say about him.
"He's in good shape. He's made a big step [with his form]."
"The atmosphere is loud if people hate you," he explained. "I don't understand what the crowd is singing.
"In Liverpool, it was different. But if we had played poorly, it would not have been the same atmosphere. We will decide how good the atmosphere is with our performance.
"Three-thousand Liverpool fans [in the away end] is enough."
