Simon Grayson has claimed a Leeds United player produced one of the “biggest” moments of his career last night as Daniel Farke’s side smashed Norwich City 4-0 at Elland Road. Following a cagey 0-0 draw at Carrow Road, Leeds played host to David Wagner’s side with another tough game expected. But Farke’s men completely annihilated Norwich at Elland Road to go through. The final now awaits Leeds after Ilia Gruev scored his first goal for the Whites since his move from Werder Bremen. Joel Piroe answered critics with Leeds’ second after a stunning cross from Italy star Willy Gnonto. A third came b…