Nani, Radamel Falcao, Pepe, Deco, Cristiano Ronaldo - you could spend hours reeling off players that have made their name in Portugal.
Porto, Sporting Lisbon and Benfica all seem to possess an endless conveyor belt of talent, making fortunes out of nurturing talent into world-class performers.
After Porto's victory over Chelsea in the Champions League on Tuesday, a few of you may be familiar with some of the main talent developed in Portugal. Don't worry, though, there are still some more hidden gems waiting to be unearthed:
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Salvio is an unknown quantity around the top leagues in Europe - Lord knows why. The Argentine has everything you’d want in a winger: He's direct, a good dribbler and delivers an end product - imagine a faster, more skilful James Milner.
He’s a key player for Benfica so they’ll fend off most interest, though there are undoubtedly a few top clubs that could make a move too tempting to refuse.
Potential buyer(s): Tottenham look likely after losing patience with Erik Lamela. Southampton and Everton would also welcome someone of his calibre.
The former Porto star's attacking quality attracted widespread attention from several big clubs this summer.
Juventus eventually won the race to sign the left-back on a five-year deal, but if his form continues, alongside the Old Lady's drop in form, interest will continue to surround the defender.
He’s quick, defensively sound and a threat going forward, so it would undoubtedly take a large sum to prize him away from his new club.
Potential buyer(s): Manchester City are lacking in a world-class left-back - don’t be surprised if they try an audacious bid.
When England U21’s lost to Portugal U21’s, Carvalho looked like a PE teacher who’d joined in with the Year 7s.
If he was highly coveted before that game, his performance undoubtedly doubled his transfer value. His physical prowess is obviously what makes him standout, but don’t be fooled - he can play.
Carvalho is technically capable, and when combined with defensive qualities you have the complete midfielder.
Potential buyer(s): Arsenal have been linked with the ‘next Vieira’ for the past three seasons. The emergence of Coquelin means Liverpool will be more likely to secure his strength and power.