Liverpool striker Luis Suarez has a stamping ban hanging over him at UEFA.
Suarez had a coming together with Zenit St Petersburg defender Tomas Hubocan during the second half of the Europa League game on Thursday night.
Television cameras showed Suarez placing his foot into the small of Hubocan's back as he chased down a loose ball late in the second half.
Nothing will be decided until Dutch referee Bjorn Kuipers hands in his report next week.