Derby Country have given Chelsea permission to speak to their current manager Frank Lampard about the possibility of taking over at Stamford Bridge, the Championship club said on Tuesday.
Lampard has emerged as the favourite to replace Maurizio Sarri at Chelsea, after the Italian joined Serie A champions Juventus earlier this month.
Lampard, who won three Premier League titles and the Champions League as a player at Chelsea, led Derby to the Championship playoff final last season in his first year in management.
Lampard, 41, spent 13 years as a Chelsea player and would replace Maurizio Sarri, who has joined Juventus after one season at Stamford Bridge.
If he does take over, he will inherit a transfer embargo after Chelsea were given a two-window transfer ban by world governing body Fifa – a decision the club are appealing against at the Court of Arbitration for Sport.