The fastest-improving (by % Season change) U21 full-backs, ranked on Field Insider.
N. O'Reilly of Manchester City is the standout for raw talent across U21 full-backs, with a Field Insider Rating of 96.7, and W. Zaïre-Emery has been the form player this season, grading 68, and F. Ademi leads the scoring with 5 goals.
The numbers a scout watches are the year-on-year jumps: Senny Mayulu has improved his Season rating most, up +45.9 on last season, while E. Diouf's scouting Rating has risen fastest, +48.8 over the same span. Those are the players whose trajectory is bending upward fastest.
By our market-value index, N. O'Reilly of Manchester City is the most valuable name in this group at 174.1.
| # | Player | Team | Age | Δ% | Season | Rating |
|---|---|---|---|---|---|---|
| 1 | E. BáezFull-back |  San Lorenzo | 21 | +141.9 24/25→25/26 | 67141.9% | 5817% |
| 2 | Álex JiménezFull-back |  Bournemouth | 21 | +98.6 24/25→25/26 | 4398.6% | 9118.7% |
| 3 | W. Zaïre-EmeryFull-back |  Paris Saint Germain | 20 | +94.3 24/25→25/26 | 6894.3% | 9412.3% |
| 4 | I. RozhkovFull-back |  Rubin | 21 | +65.9 24/25→25/26 | 4965.9% | 36±0% |
| 5 | Caleb Marfo YirenkyiFull-back |  FC Nordsjaelland | 20 | +58.6 24/25→25/26 | 3658.6% | 5117.4% |
| 6 | I. GaniouFull-back |  Lens | 21 | +50.3 24/25→25/26 | 4350.3% | 8437.9% |
| 7 | Iván FresnedaFull-back |  Sporting CP | 21 | +43.5 24/25→25/26 | 3443.5% | 640.9% |
| 8 | Martim FernandesFull-back |  FC Porto | 20 | +31.2 24/25→25/26 | 3931.2% | 636.4% |
| 9 | J. SeysFull-back |  Club Brugge KV | 21 | +28.4 24/25→25/26 | 3728.4% | 6615.3% |
| 10 | N. HeldFull-back |  Waalwijk | 20 | +26.2 24/25→25/26 | 2726.2% | 6215.8% |
| 11 | R. BesselinkFull-back |  De Graafschap | 21 | +24.3 24/25→25/26 | 2624.3% | 586.2% |
| 12 | T. StrataFull-back |  Guimaraes | 21 | +2.5 24/25→25/26 | 242.5% | 604.6% |
| 13 | O. AertssenFull-back |  PEC Zwolle | 21 | +1 24/25→25/26 | 311% | 674.2% |
| 14 | E. DijkstraFull-back |  AZ Alkmaar | 19 | 0 24/25→25/26 | 23±0% | 678.8% |
| 15 | G. ReadFull-back |  Feyenoord | 20 | -17.2 24/25→25/26 | 2717.2% | 753% |
| 16 | L. HallFull-back |  Newcastle | 21 | -20.2 24/25→25/26 | 3320.2% | 877.6% |
| 17 | Leopold WurmFull-back |  SSV Jahn Regensburg | 20 | -21.7 24/25→25/26 | 2021.7% | 4328.5% |
| 18 | L. VargasFull-back |  Union Santa Fe | 21 | -21.9 24/25→25/26 | 4021.9% | 560.7% |
| 19 | K. SymonsFull-back | De Graafschap | 21 | -27.5 24/25→25/26 | 1927.5% | 54±0% |
| 20 | Massien GhaddariFull-back |  Jong Utrecht | 21 | -28.4 24/25→25/26 | 1528.4% | 545.6% |
| 21 | M. GurgulFull-back |  Lech Poznan | 20 | -29.4 24/25→25/26 | 2729.4% | 454.4% |
| 22 | Francisco ChissumbaFull-back |  Alverca | 21 | -32.4 24/25→25/26 | 2132.4% | 613.2% |
| 23 | P. UgwuFull-back |  FC Volendam | 20 | -36.9 24/25→25/26 | 1736.9% | 6726.6% |
| 24 | Elijah Xavier CampbellFull-back |  Port Vale | 21 | -39 24/25→25/26 | 1639% | 4211.1% |
| 25 | C. Mawissa ElebiFull-back |  Monaco | 21 | -41.6 24/25→25/26 | 3141.6% | 79±0% |
| 26 | Luca MarianucciFull-back |  Torino | 21 | -52.4 24/25→25/26 | 1552.4% | 736.7% |
| 27 | L. JettenFull-back |  Jong Ajax | 19 | -52.5 24/25→25/26 | 1652.5% | 517.4% |
| 28 | T. BischofFull-back |  Bayern München | 21 | -67.1 24/25→25/26 | 2967.1% | 86±0% |
| 29 | J. HatoFull-back |  Chelsea | 20 | -69.4 24/25→25/26 | 2069.4% | 803.2% |
| 30 | E. AlievskiFull-back |  Trelleborg | 21 | -76.2 24/25→25/26 | 676.2% | 2519.9% |
| 31 | J. ŠimićFull-back |  Al-Ittihad FC | 21 | -78 24/25→25/26 | 978% | 5014.2% |
