Chesterfield have announced that forward Mani Dieseruvwe has joined the club from Sheffield Wednesday on a permanent basis.
The 19-year-old frontman spent last month on loan at Paul Cook's side, with the League One club now giving the rising striker a chance to impress with a full-time contract.
"We're delighted to have Mani with us permanently now," Chesterfield boss Paul Cook said of the move.
"He has power and pace and that's exactly what a lot of teams are looking for to play in today's game.
"Mani's shown great signs in training and we're really excited to see what he'll be able to do with our team going forwards."
Cook's side currently hold fifth spot in the League One standings.