Perez, 18, came on with his team down a man and a goal and was involved on the right flank as his side pushed for an equalizer. Ultimately Inter scored late to seal a two-goal win.
The California native officially signed for Fiorentina in February and after impressing for the club's youth and reserve sides, Perez made his first-team breakthrough for the Viola on Monday at the San Siro.
Perez is the nephew of former U.S. national team player Hugo Perez. He has been a member of the U.S. youth national team at the U-17 and U-20 level.
75' - Down to 10 men & trailing Inter 3-2 in the San Siro, Fiorentina manager Paulo Sousa hands 18 y/o Californian Josh Perez a pro debut pic.twitter.com/hdqjp7kDSd— Nats Abroad (@NatsAbroad) November 28, 2016