Leo Alexander Francis Castledine

Leo Castledine is a 20-year-old English attacking midfielder currently on the books at Middlesbrough in the EFL Championship. Still in the early stages of his senior career, Castledine has made seven appearances in the 2025/26 season, contributing one goal and accumulating 230 minutes of action, with his time on the pitch coming predominantly from the bench.

His recent run of matches reflects a squad player role rather than a first-team fixture. He came on for 32 minutes in a 0-1 home defeat to Charlton on 11 March, managed just seven minutes in a 4-0 away win at QPR three days earlier, and added 22 minutes in a goalless draw at Blackburn on 21 March. His individual ratings across those outings have hovered around 6.44 to 6.48, suggesting solid but unspectacular cameos. With a season average rating of 6.6, Castledine is performing at a level consistent with a young player still establishing himself at Championship level. Notably, he was part of a Carabao Cup-winning squad, which represents a meaningful early career achievement at his age.

The transfer data on record includes entries dated August 2025 and a future-dated entry for May 2026, though no confirmed fee or club details are attached to either, so the picture around his contractual situation remains unclear for now. No international call-up news is currently attached to his profile, though his age and domestic cup pedigree could attract attention from England youth setups if his club minutes increase.

In Middlesbrough's upcoming fixtures, the key thing to observe is whether Castledine earns a starting berth or continues to be used as an impact substitute. His ability to influence matches in short bursts will be worth monitoring, particularly in games where Boro need creativity in the final third. SportSignals' AI analysis engine has been tracking Middlesbrough's matches this season, and how Castledine is deployed in those contexts will give a clearer picture of his standing within the squad.