Domestic-league season · Peterborough.
| Competition | Apps | G | A | Min | Match |
|---|---|---|---|---|---|
 League One | 24 | 0 | 0 | 1773 | 6.85 |
 EFL Trophy | 3 | 1 | 0 | 270 | 6.73 |
 League Cup | 1 | 0 | 0 | 90 | 6.6 |
 FA Cup | 2 | 0 | 0 | 90 | 7.3 |
Mills's current-season form is up 600% on last season (Season 2→14), while his Rating climbed 41→43. That makes this his strongest season for form to date.
| Season | Club | Apps | G | A | Match | RTG | Season |
|---|---|---|---|---|---|---|---|
| 2025/26 | Peterborough · 18th | 24 | 0 | 0 | 6.85 | 43 | 14 |
| 2023/24 | Peterborough · 4th | 1 | 0 | 0 | 7.2 | 41 | 2 |
Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.
Harley Mills is a 22-year-old full-back at Peterborough, rated 43.4 overall by Field Insider's model, ranking 152nd of 482 in the League One and 1655th of 2861 U-23 players tracked. An emerging talent, he has been a rotation option this season (42.8% of available minutes). His defensive output reads 3.2 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Mills.
Judged on this season alone, Mills graded 14 — a workmanlike campaign that ranks 63rd of 79 of the 79 full-backs in the League One, on 4 clean sheets and 3.198 defensive actions per 90.
Year-on-year, that's a clear step up on last season (Season 2 → 14).
On long-term talent our Rating reads 43, top 26% of the 79 full-backs in the League One. At 22 Mills is still climbing toward his ceiling, and a market index of 25.6 reflects that trajectory.
3.2 tackles, blocks & interceptions per 90 — moderate defensive volume, with 4 clean sheets across 24 appearances. Doing that for a lower-table side (18th of 24) is harder than the bare numbers suggest: a back line under more pressure has to defend more often and protects fewer leads, so the volume — and any clean sheets — carry real weight.
With a Rating of 43.4, Mills carries the 20th-highest potential of the full-backs in the League One (top 26%), and he is posting that for a lower-table side (Peterborough finished 18th of 24) — individual numbers are harder to earn on a struggling team, so his underlying level likely sits a touch above the ranking. Defensively he reads as moderate defensive volume (3.2 tackles, blocks & interceptions per 90). Approaching peak years; value is still building (price multiplier 1.9×) with the best seasons likely ahead.
Generated from Field Insider's rating model · AI-written analysis to follow.
The gold line is market value — an index (not €) blending rating, age and league. It climbs through the early 20s, peaks around ages 23–27 (~27), then tapers with age. At 22, Mills sits on 25.6, still climbing toward its peak. The blue line is Mills's projected Rating — 43.4 today — recomputed at each age, so it follows the same rise-and-fall as a career matures and declines. Solid = up to today; dashed = projected.
No transfer news found for this player.
