Transfermarkt calculates a player's market value using a qualitative approach and says the goal is to estimate the value of a player in a free market, not to predict a specific transfer fee.
While some of the numbers can be skewed, it’s still a good indication of who they rank as the Irish League’s most exciting talents and those that could potentially be set for bigger and better things in the future.
Using their market values system, here are who they view as the Premiership’s top 15 most valuable young players aged under 21.

9. Tomas Galvin (Dungannon Swifts)
Tomas Galvin showed his undoubted quality on Saturday after coming off the bench to score twice in a 5-1 win over Crusaders, including a stunning free-kick. The 20-year-old is approaching 50 league appearances for Dungannon Swifts and could be firing in the goals in the Irish League for years to come. Photo: Desmond Loughery/Pacemaker Press

10. Axel Piesold (Cliftonville)
Axel Piesold was involved in Premier League matchday squads at Luton Town and has made 15 Premiership appearances during his loan spell at Cliftonville so far this season. The 19-year-old has started in their last three consecutive league matches and also in Tuesday's BetMcLean Cup semi-final win over Larne. Photo: David Maginnis/Pacemaker Press

11. Harry Jewett-White (Crusaders)
Welsh youth international Harry Jewett-White made two League One appearances for Portsmouth during the 2022/23 campaign and joined Crusaders last summer after departing Fratton Park. The 20-year-old has played in 19 Premiership matches for Declan Caddell's side and returned from injury in Tuesday's BetMcLean Cup semi-final defeat to Glentoran. Photo: Andrew McCarroll/Pacemaker Press

12. Kirk McLaughlin (Coleraine)
Kirk McLaughlin returned to Coleraine from Glentoran ahead of this season and with the form of main man Matthew Shevlin, the 20-year-old has struggled for senior opportunity, making only nine Premiership appearances. He has been in fine form for the club's reserves, netting eight times in as many U20 Premiership outings. Photo: PACEMAKER BELFAST


