Barcelona's crucial Champions League quarter-final second leg against Atletico Madrid is shrouded in injury doubt, despite a glimmer of hope on the team sheet. Manager Hansi Flick has included young midfielder Marc Bernal in his squad for the trip to the Riyadh Air Metropolitano, but the 17-year-old is almost certain to miss the high-stakes clash.

The teenager, who has recently been linked with a move to the very club Barcelona must defeat, is still awaiting medical clearance after suffering an ankle sprain in a La Liga match at the same stadium earlier this month. With kick-off fast approaching, time has all but run out for his recovery, dealing a blow to Flick's tactical options.

Bernal's expected absence throws the spotlight onto Barcelona's midfield puzzle. The Blaugrana need to overturn a two-goal deficit, making control of the engine room absolutely vital. While Pedri's creativity is a guaranteed starter, the question of who partners him is now wide open.

Frenkie de Jong has returned from injury, but the intensity of a Champions League knockout match may see him begin on the bench. This likely leaves Flick choosing between the tenacity of Gavi or the defensive solidity of Eric Garcia to complete the midfield duo, with Marc Casado seemingly out of favor.

This selection headache underscores the fine margins in elite football. Barcelona's quest for a famous comeback hinges not just on spirit, but on finding the right midfield balance to dominate Atletico Madrid in their own fortress. All eyes will be on Flick's final lineup as the football world awaits a classic European night.