Xavi correctly predicted that Qatar would win the Asian Cup to the delight of coach and compatriot Felix Sanchez.
Qatar were crowned Asian Cup champions for the first time after defeating Japan 3-1 at the Zayed Sports City Stadium on Friday.
Qatar forward Almoez Ali seized a piece of Asian Cup history with a magnificent overhead kick in Friday's final.
UAE argued that Qatar have fielded two ineligible players in the Asian Cup, but the AFC has dismissed their appeal.
Japan and Qatar progressed from highly charged semi-finals to earn their shot at Asian Cup glory.
Felix Sanchez's Qatar are into the 2019 Asian Cup final thanks to an impressive 4-0 win over host nation United Arab Emirates.
Felix Sanchez and Alberto Zaccheroni each believe their side will prevail as Qatar face hosts the United Arab Emirates at the Asian Cup.
Abdelaziz Hatim's fine strike saw Qatar knock South Korea out of the Asian Cup and book a showdown with United Arab Emirates or Australia.
Holders Chile will face guests Japan in the group stage of the 2019 Copa America, with Brazil and Argentina in Group A and B respectively.
A fourth successive Asian Cup semi-final is in the offing for South Korea but coach Paulo Bento wants to see plenty of goals against Qatar.