Newcastle's Titus Bramble will not face disciplinary action after appearing to strike PSV Eindhoven's Remco van der Schaaf last week.
Van der Schaaf went to ground after being caught by Bramble during the Uefa Cup quarter-final first-leg.
The referee spoke to both players at the time of the incident but decided not to caution them.
"There is nothing in the referee's report so there will not be any action taken," a UEFA spokesman said.
Newcastle had feared that video evidence may be used against Bramble after PSV coach Guus Hiddink complained about the referee's lack of action.
Van der Schaaf received extensive treatment on the pitch after the incident and the home fans and players both vented their anger.
Newcastle and PSV meet in the second leg at St James' Park on Thursday with
either Inter Milan or Marseille awaiting the winners in the semi-finals.