Manchester City are one of a number of European clubs who have been scouting Valencia duo Jesus Vazquez and Cristhian Mosquera, according to a report.
Both Vazquez, 19, and Mosquera, 17, have been promoted to the first team this season, with the former featuring eight times in all competitions, while the latter has made five senior appearances.
According to Spanish news outlet Super Deporte, 'top' representatives from up to 18 clubs were in attendance to watch the defenders play for the Spain Under-19s side in a 2-2 draw against Austria last week.
Scouts from Man City, Liverpool, Arsenal, Tottenham Hotspur, Atletico Madrid, Barcelona, Real Madrid, Sevilla, AC Milan, Atalanta BC, Juventus, Paris Saint-Germain, Borussia Dortmund, Ajax, Feyenoord, PSV Eindhoven, AZ Alkmaar, and Vitesse were all in attendance at the Estadi Olimpic Camilo Cano.
Left-back Vazquez and centre-back Mosquera are admired by Valencia head coach Jose Bordalas, who is keen to keep hold of both players and help them develop into first-team regulars.
The La Liga outfit are under no pressure to sell the defensive duo, as they are both under contract until June 2025; however, Mosquera – who renewed his deal in January – now has a €25m release clause.