Dani Olmo is set to start for FC Barcelona in the upcoming derby against Espanyol after recovering from a hamstring injury that sidelined him for a month. His impressive performances prior to the injury, including scoring in his first three matches back, have garnered attention from manager Hansi Flick. Meanwhile, Barcelona faces registration challenges for Olmo and teammate Pau Victor in the January transfer window due to ongoing financial fair play issues. The club is optimistic yet cautious about registering both players, as they await income from deals that have been delayed. Olmo's journey back to Barcelona, after leaving for Dinamo Zagreb a decade ago, highlights his resilience and the significance of this derby against his former club. The match is anticipated to be emotionally charged, especially with Olmo facing off against his old friend Javi Puado.