Barcelona thrashed 10-man Real Betis 4-0 on Saturday to move a step closer to winning La Liga for the first time since 2019. With his side comfortably winning, Xavi brought on 15-year-old forward Lamine Yamal to become the club’s youngest ever player to debut in La Liga. The Pole, La Liga’s top scorer, reacted after Real Madrid’s Karim Benzema earlier …