By Grey Whitebloom Xavi Hernandez’s high-flying Barcelona host Celta Vigo in the Spanish top flight on Sunday night. The Catalan giants have made a strong start to domestic proceedings, coming into the contest on the back of six consecutive league victories. However, back-to-back Champions League defeats have left their European aspirations hanging in the balance. Eduardo ‘Chacho’ Coudet’s Celta Vigo are as exciting as they are unpredictable but boast one of the division’s underrated gems in the form of Iago Aspas. The talismanic forward has scored ten goals in his last 13 appearances against …