Cologne - As a conveyor belt for young talent, the Bundesliga is unmatched worldwide. Germany reaped the benefits with success at the 2014 FIFA World Cup, while some of the top-flight's youngsters have been leaving quite the mark in international age-group sides this summer.

Over the course of this five-part series, will run the rule over 25 players of 20 or under, all of whom are set to make an impact in 2015/16. Here's part four of our feature special...

Leroy Sane

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Date of birth: 11/1/1996

Club: FC Schalke 04

Bundesliga appearances: 14

Leroy Sane burst onto the scene at Schalke last season, with his pace, directness and agility proving a handful for even the most robust Bundesliga defences to handle. He scored three league goals, against Wolfsburg, Köln and Hertha Berlin, and also netted in the UEFA Champions League away to then-reigning champions Real Madrid C.F. Klaas-Jan Huntelaar and Eric Maxim Choupo-Moting may be ahead of him in the pecking order at the Royal Blues right now, but Sane has shown that he has what it takes to succeed at this level.

Tin Jedvaj

Date of birth: 28/11/1995

Club: Bayer 04 Leverkusen

Bundesliga appearances: 22

What a debut campaign Tin Jedvaj had in the Bundesliga last season. The Croatian youngster initially joined on loan from AS Roma, but so impressed was head coach Roger Schmidt with the defender’s positioning, awareness, athleticism and maturity that he soon moved to make the deal a permanent one. Jedvaj went on to win the Young Player of the Year award in his homeland, and looks set to be a mainstay with the Werkself for years to come.

Marc Stendera

Date of birth: 10/12/1995

Club: Eintracht Frankfurt

Bundesliga appearances: 36

Stendera hasn’t had the best of luck with injuries since making his Bundesliga debut in 2012/13, but when he’s fit it’s abundantly clear why so many regard the 19-year-old Germany Under-20 international as one of the country’s hottest prospects. Although a nifty dribbler with good crossing ability and a nose for goal, it’s the attacking midfielder’s awareness in the final third that truly sets him apart from other players of a similar age.

Leon Goretzka

Date of birth: 6/2/1995

Club: FC Schalke 04

Bundesliga appearances: 35

Like Stendera, Goretzka’s time in the Bundesliga has been blighted by injury. The one-time Germany international became a regular in the Schalke midfield during the second half of his debut Bundesliga season in 2013/14, but ongoing muscle problems have restricted him to just ten substitute appearances since. Now fit, the no-nonsense holding midfielder will be desperate to show folk exactly why he has been dubbed ‘the next Michael Ballack’.

Julian Green

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Date of birth: 6/6/1995

Club: FC Bayern München

Bundesliga appearances: 5

Bayern coach Pep Guardiola namechecked Julian Green when asked for his thoughts on his squad shortly after taking the reins at the club in 2013, saying how impressed he was with the attacker's qualities. First-team opportunities have been limited for the pacey striker, who nevertheless shot to global fame after scoring for the USA at the 2014 FIFA World Cup in Brazil. A loan spell at Hamburger SV last season was not as productive as planned, but the forward has undoubted promise and was part of the Bayern squad that went on a pre-season tour of China.

Ones to watch - Part I
Ones to watch - Part II
Ones to watch - Part III
Ones to watch - Part V