Derby County have agreed a fee with Mansfield Town for defender Tom Naylor, BBC Radio Nottingham understands.
The 20-year-old impressed in a trial earlier this season and the Rams are now favourites for his signature despite interest from elsewhere.
Centre-half Naylor recently had a week-long trial spell with Derby's Championship rivals Burnley.
Naylor, who can play at right-back, also spent time with Premier League side Fulham.
Blue Square Bet Premier side Mansfield have also previously rejected a bid from League One team Bournemouth.