Derby have taken Mansfield defender Tom Naylor on trial.
The 20-year-old centre-half, who is also being monitored by an unnamed Premier League club, played 67 minutes as the Rams reserves beat Walsall 6-1 at Belper Town's Christchurch Meadow ground on Wednesday night.
Naylor partnered Russell Anderson, making his comeback from almost a month out with a groin injury, at the heart of Derby's defence while Conor Doyle and David Martin returned to action after ankle injuries suffered in pre-season.
Anderson played the full game and opened the scoring, while Callum Ball, Chris Maguire, Alex Witham and Tomasz Cywka (2) were also on the scoresheet.
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