Alcaraz, who is 18 years and four months old, is eight days younger than Andre Agassi when the American reached the 1988 US Open quarterfinals.
The substitute scored an extra-time winner as Brazil edged Spain 2-1.
A move to PSG would reunite Messi, who has officially been a free agent since July 1, with his former Barcelona teammate Neymar.
Retiro Park, just off the Paseo del Prado in the centre of the Spanish capital, is one of the city's most visited attractions.
Universidad Europea de Madrid has students from all over the world and one of them is Karthik Thulasi, a native of Chavara in Kollam district.
Ramos left Real last month after failing to reach an agreement to extend his 16-year stay in the Spanish capital.
The coach admitted the Azzurri had to suffer to reach their first major tournament final in nine years.
Spain missed two of their spot-kicks, including one by substitute Alvaro Morata, whose late equaliser had taken the game into extra time.
Italy set up a semifinal clash against Spain after first half goals from Nicolo Barella and Lorenzo Insigne led them to a 2-1 win.
Mikel Oyarzabal struck the winning penalty after Switzerland's Ruben Vargas fired over the bar as Spain won 3-1 in a shootout following a 1-1 draw.