text: The 23-year-old, who spent three years at the Spireites, has penned a two-and-a-half-year deal.
  The former Ivory Coast Under-20 international made 82 league appearances for Chesterfield, scoring 10 times for the League One side.
  Meanwhile, first-team coach Kevin Nugent has left the O's after the arrival of Kevin Nolan as player-boss.
  Find all the latest football transfers on our dedicated page.
target: Leyton Orient have signed striker Armand Gnanduillet from Chesterfield for an undisclosed fee.