The Premier League is home to some of the best raw talent in the world.Numerous clubs place a large significance on developing their youth and have achieved great success by doing so. Every top club in the league has several promising youngsters in their ranks who are increasingly being integrated into the first-team.This season has also seen the emergence of many world-class youngsters who have shined to a great extent. These players have developed into key members of their sides and look set to become world-class footballers.Let's take a look at the top five under-21 players in the Premier League.#5. Gabriel Martinelli | ArsenalArsenal v West Ham United - Premier LeagueGabriel Martinelli is currently one of Europe's most promising youngsters.The 20-year-old Brazilian arrived at Arsenal in 2019 from the second-tier of Brazilian football and has improved significantly in the three years since. He is now one of the first names on the Arsenal teamsheet and has proved to be an extremely effective attacker.Premier Sports@PremierSportsTV @Arsenal's Gabriel Martinelli comes on for his Brazil debut!What a moment for the talented youngster 6:45 AM · Mar 25, 202215115🔴 @Arsenal's Gabriel Martinelli comes on for his Brazil debut!What a moment for the talented youngster 👏 https://t.co/zPussxN2lLMartinelli displays blistering pace and dribbling ability from the left side of the attack. He is more than capable of taking on players and also possesses outstanding finishing ability.Statman Dave@StatmanDaveGabriel Martinelli for Arsenal in the Premier League this season: 14 starts (18 apps) 5 goals 3 assistsPinpoint delivery for the opener. 10:19 AM · Mar 13, 202231416Gabriel Martinelli for Arsenal in the Premier League this season:👕 14 starts (18 apps)⚽️ 5 goals🅰️ 3 assistsPinpoint delivery for the opener. 🇧🇷 https://t.co/SasPkmCsqTMartinelli has scored five goals and provided three assists in 19 league appearances so far this season. He is undoubtedly a significant member of Mikel Arteta's side.#4. Michael Olise | Crystal PalaceCrystal Palace v Everton: The Emirates FA Cup Quarter FinalMichael Olise has emerged as one of the best young players in the Premier League this season.Olise primarily lines up on the right side of midfield, but is versatile enough to play anywhere along the center line. He is known for his excellent first-touch and intricate passing abilities.Statman Dave@StatmanDaveMichael Olise for Crystal Palace in all competitions this season: 14 starts 4 goals 8 assistsExcellent debut campaign. 6:30 AM · Mar 20, 20221664129Michael Olise for Crystal Palace in all competitions this season:👕 14 starts⚽️ 4 goals🅰️ 8 assistsExcellent debut campaign. 🙌 https://t.co/i1cs6yHbdwOlise has shown over the course of the season that he is adept at controlling the tempo of the game. He is extremely agile and displays outstanding speed in short spaces.OptaJoe@OptaJoe8 - Michael Olise's eight assists in all competitions this season are the joint-most of any Premier League player aged 21 or under, alongside Phil Foden. Wand. twitter.com/OptaJoe/status…OptaJoe@OptaJoe5 - @CPFC's Michael Olise has been directly involved in five goals (2 goals, 3 assists) in four FA Cup appearances this season, the most of any player. Fever.6:34 AM · Mar 20, 2022294495 - @CPFC's Michael Olise has been directly involved in five goals (2 goals, 3 assists) in four FA Cup appearances this season, the most of any player. Fever. https://t.co/BYdfPVmMNJ8 - Michael Olise's eight assists in all competitions this season are the joint-most of any Premier League player aged 21 or under, alongside Phil Foden. Wand. twitter.com/OptaJoe/status…He has previously represented Reading for two years and signed for Crystal Palace last year. The 20-year-old's addition has come as a blessing to the side. Olise has scored two goals and provided five assists in 22 appearances in the Premier League so far this season. He is, without a doubt, one of the most promising youngsters in the Premier League.