FC Barcelona and their coach Hansi Flick have an important appointment this Wednesday in Lisbon. Opposite them, Benfica, one of the most competitive teams in Europe.
Beyond the opponent, the focus is on the tactical change looming in Barça's starting eleven. Although there are still doubts, the German coach has key decisions to make.
Gavi or Dani Olmo: The main question
The big question keeping Barça fans on edge is who will occupy the left wing of the attack: Gavi or Dani Olmo. Both players have played an important role this season, but this time, it seems that favoritism leans toward the winger from Terrassa.

Gavi, despite being a pillar in Flick's tactical scheme, hasn't had the best of weeks. After a feverish process that has kept him out of several sessions, his presence in the eleven is in doubt.
The German coach had planned for Gavi to start against Real Sociedad, but the Andalusian's physical condition could complicate his inclusion. If Gavi doesn't recover, Dani Olmo will be his substitute, as against Real Sociedad.
The possible change in defense: Iñigo Martínez for Araújo
Regarding the defense, Hansi Flick has another card up his sleeve. In the January match against Benfica at Da Luz, Barça couldn't count on Iñigo Martínez due to injury.

Now, the Basque center-back is fully recovered and could be one of the starters this Wednesday. His entry into the team would mean Ronald Araújo's move to the bench.
Iñigo Martínez has shown to be in good physical and mental shape, and his experience could be key in such a demanding match. His presence in the eleven would be a bet for defensive solidity against the always dangerous attacks of Benfica.
The midfield: Frenkie de Jong for Marc Casadó
Another change that could be decisive is the one affecting the midfield. Frenkie de Jong seems to have surpassed Marc Casadó in the fight for a starting spot. Although the youth player has had correct performances, especially in the last league matches, De Jong's performance in recent games has given him the edge.
The Dutchman, with his ability to dictate the pace of the game and his experience in high-level matches, would be chosen to accompany Pedri in the midfield. With De Jong at his best, Barça would gain stability and ball control, something essential against a Benfica that doesn't usually forgive.
With these changes, Barça's probable eleven could be composed of: Szczesny; Koundé, Cubarsí, Iñigo, Balde; Pedri, De Jong; Lamine, Olmo (or Gavi), Raphinha; and Lewandowski.