4 Players - West Ham United, Fulham, Arsenal & Chelsea

West Ham United
Players: Josh Cullen, Reece Oxford, Declan Rice & Mark Noble
Total Market Value: €23 million
Total Premier League Matches Played: 359
Total Premier League Goals: 37
West Ham traditionally boasts a wonderful youth system and have produced numerous great players over the years. This season's squad features four products of their youth academy with Mark Noble the standout name. The central midfielder has made 320 Premier League appearances for the Hammers over the years.
Recce Oxford and Declan Rice are also names that merit a mention. Both aged 19, they display bags of potential and will likely feature for West Ham throughout this season.
Fulham
Players: Luca de la Torre, Marcus Bettinelli, Ryan Sessegnon & Cauley Woodrow
Total Market Value: €39.25 million
Total Premier League Matches Played: 7
Total Premier League Goals: 1
Fulham is back in the big time and brings with them one of the most exciting youth players in Europe at the moment. Ryan Sessegnon has earned plaudits from all corners following his outstanding season in the Championship last term and it is perhaps surprising that the 18-year-old decided to stay at Craven Cottage for this season.
However, we can expect big things from the midfielder in the future and it will be hugely surprising if Fulham doesn't cash in on their player next year. Of the other names, Cauley Woodrow is worth a mention. He is a survivor from Fulham's previous stint in the Premier League, playing six times for the Cottagers in the 2013/14 season.
Arsenal
Players: Emiliano Martinez, Ainsley Maitland-Niles, Alex Iwobi & Hector Bellerin
Total Market Value: €63 million
Total Premier League Matches Played: 214
Total Premier League Goals: 14
Having moved from Barcelona's youth team to Arsenal's under-18 side in 2011, Hector Bellerin is counted as an academy product for the Gunners. The Spanish right-back is among the best in the world at his trade and has made 125 appearances for the North London club over the last four years.
Of the other players, Alex Iwobi is an exciting prospect who is yet to fulfill his potential. The Nigerian has made 65 appearances in the league for Arsenal but there is still a feeling that more is to come from the 22-year-old.
Chelsea
Players: Charly Musonda Jr., Andreas Christensen, Tammy Abraham & Ruben Loftus-Cheek
Total Market Value: €73 million
Total Premier League Matches Played: 56
Total Premier League Goals: 1
Chelsea's youth teams have dominated their opposition over the past few seasons, winning numerous titles and trophies. However, the club has a wide network of affiliate clubs where players are loaned out and rarely gain any first-team opportunities upon their return.
Of the few academy graduate players who have made it into the squad for this season, Andreas Christensen displays huge potential. The Dane has played 28 times for the West London club and will hope to establish himself as a first-choice center-back for the rest of this season.
Next Up, teams with 5/6 former academy players in their squad.