One of the great things about football is watching a promising young footballer develop into a world star.
The players in question need to have talent, of course, but they also need the hunger to reach the very top.
Not every young footballer possesses that required determination, which is why some fail to fulfil their potential, but those who do give themselves a real chance of becoming a high-profile star name.
This XI is made up of players aged 21 or under currently on the books of Premier League clubs.
Some of them have already achieved plenty, despite their tender ages, while others still have a way to go.
How many of them are the real deal? Have your say in the comments section below.
Click next to see the Premier League XI...
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