After a 2-0 victory over Rangers last night, Williams couldn't contain his enthusiasm for the upcoming clash at Old Trafford.

"Playing at Old Trafford is a dream come true, it's an amazing stadium," he gushed. "We have to put on a good show at home and then head over there for the second leg. We're going to give it our all and hope to reach the final. United are a great team, they showed that today, but we're not backing down."

Williams also reflected on Athletic's impressive season, saying: "We're doing something extraordinary. Last year we won the Copa del Rey and now we're in the Europa League semi-finals. I hope we can reach the final, the team is working hard for it."

He also had kind words for teammate Oihan Sancet, who scored the winning penalty. "Oihan is an incredible player. Sharing a locker room with him is a blessing. He's one of the best penalty takers Athletic has ever had, and I'm very proud of him."