 Complete the following phrase:  Guzmán joined the Juventus youth system, one of the best youth systems in the world, from Presidente Hayes. In March 2002 he was handed a start against Arsenal in the UEFA Champions League due to Juventus rotating their squad having already qualified for the next round. Juventus won 10. He was then loaned out in 2002 to gain experience at Tera. For the 200304 season, he was again loaned out, but this time to Messina. After Messina were promoted to Serie A, Juventus opted to loan him out to Serie B side Crotone. After a successful year with Crotone he was loaned out to Serie A side Siena for the 