Marc Guiu: Barcelona coach Xavi told teen to 'be ready' before debut
Coach Xavi says he told 17-year-old Marc Guiu "you have one chance, be ready" before the teenager scored Barcelona's winning goal 33 seconds into his senior debut to give them a 1-0 home win over Athletic Bilbao.
READ MORE: Guiu, 17, gets winner 33 seconds into Barca debut