Benfica filed the complaint after Valverde swung his arm towards Samuel Dahl's head in the 80th minute of the match. While the level of contact was impossible to determine and VAR didn't intervene, the Portuguese side still took action.
UEFA is currently investigating the Vinicius-Prestianni case, but no suspension or punishment is expected for either incident. The return leg at Santiago Bernabeu next Wednesday could be heated, as all four players involved are likely to feature. Real Madrid currently holds a 1-0 aggregate lead.