Born in Boldon, Roman made 19 appearances at Under-18 level last season, making his U18 Premier League debut aged 15.
The teenage shot-stopper also made three outings in last season's UEFA Youth League campaign, becoming the youngest English goalkeeper in the competition's history.
Dowell, who cites Manuel Neuer as his footballing idol, is capped four times by England at Under-17 level, making his international debut for the Young Lions in a 7-5 friendly win against Germany in September 2025.
The promising 'keeper made his first start for United's Under-21s during a National League Cup clash against Boreham Wood in September 2026 at the age of 16.
He gained a first call-up for England at Under-18 level, starting in-between the sticks during a 3-2 win against Colombia at the UEFA Friendship Cup in Switzerland.