Atletico Madrid striker Angel Correa is facing a spell on the sidelines after Sunday's derby.
Correa suffered a knee strain after being on the end of a high challenge from Real Madrid midfielder Jude Bellingham.
Atletico players and coach Diego Simeone have since complained Bellingham should've been sent off for the tackle.
Atleti announced today that the Argentine has a grade I sprain of the medial collateral ligament of the knee" that will keep him out for the next few games.
He is expected to return after the October international break.