Atletico Madrid head coach Diego Simeone is concerned he will be without Filipe Luis for a significant period of time after the left-back was injured during Thursday's dominant 5-1 Europa League win over Lokomotiv Moscow.
Atleti were already 3-0 to the good after the first leg at the Wanda Metropolitano but took no chances in the Russian capital, with Angel Correa and Koke on target before Fernando Torres hit a brace and substitute Antoine Griezmann rounded off the scoring with an exquisite chip.
However, Filipe Luis departed the pitch on a stretcher after being left writhing in pain from a blow to the calf.