Atleti have been drawn into Group E with some unfamiliar foes.
Atleti battle winless Sevilla in a Sunday evening showdown.
The Portuguese has extended his contract with Atlético to 2029.
The Portuguese, stripped of his squad number and his standing under Simeone, will soon be on his way.
Atlético visit Vallecas in matchday three.
The season is only two games old, but could one of Atleti’s new signings leave already?
The Saudi club has submitted a bid for the World Cup winner.
The season’s first leaders head for the Villamarín.