Benfica allege that Valverde took a jab at Samuel Dahl near the sidelines, a move they claim warranted a red card but was missed by VAR. The Portuguese club views the incident as violent misconduct and have submitted a detailed report to European football's governing body.
The complaint adds to the escalating tension ahead of the second leg. While Valverde is unlikely to face a suspension, the move signals Benfica's aggressive stance against Madrid's players.