Gerard Martín has raised many doubts as an alternative to Balde at left back. His performance has been far from the desired level. The fans don't trust that he can be an important part of the future.

Hansi Flick, despite everything, has given him opportunities since his arrival. He has even chosen him ahead of Álex Valle. But the problem is clear: he needs more guarantees.
In principle, Gerard Martín will stay for one more season. However, if a €12 million offer arrives, Barça will agree to sell him. Flick has been clear with the sporting management in this regard.
Gerard Martín doesn't convince as Barça's left back
The German coach wants more quality and experience in that position. He isn't looking for an established star, but he does want someone ready to be a starter. He'll only take that route if Gerard leaves in the end.

There's already a name gaining traction in Camp Nou offices. It's a left back who has a very important endorsement. A familiar face to both Culers and Xabi Alonso.
This profile fits perfectly with Flick's idea. In addition, he has a very special past with Barça. His recent performance has been more than outstanding in a major European league.
The signing is endorsed by Xabi Alonso
The chosen one is Alejandro Grimaldo, current Bayer Leverkusen defender. He was trained at La Masia and worked under Xabi Alonso for the past two seasons. He was a key piece in the historic German double.

Grimaldo has never hidden his desire to return to Spain. In fact, he has always dreamed of coming back to Barça at some point. His knowledge of the style and his maturity make him ideal for the project.
Xabi Alonso rates him as one of the best fullbacks at the moment. He has been his loyal lieutenant at Leverkusen from day one. That's why his name has gained momentum in the Barça environment.
Barça trusts Grimaldo will be important
For now, the move is at a very early stage. There aren't any open negotiations or agreement with Bayer Leverkusen. Everything depends on whether Gerard Martín leaves the locker room this summer.
Barça knows they can't make mistakes in this window. That's why they prioritize profiles with experience and a past at the club. Grimaldo fits both conditions.

Meanwhile, Flick continues to assess his options calmly. He knows the season is long and that bench depth is key. But he wants certainties, not just promises.
Gerard Martín's future will set the course in the coming days. If he stays, Flick will keep giving him minutes as he has so far. If he leaves, they already have a top-level replacement ready.
With Xabi Alonso's blessing, Grimaldo would be much more than a signing. He would be a bet on experience, talent, and a Culer past. Now, everything is in the hands of the market.