The Chelsea midfielder, currently on the books at Reading, was to go on and make a single senior appearance for the Stamford Bridge
outfit when he replaced Eden Hazard in the dying minutes of a 2-1 win in the last game of the 2013/14 season against Cardiff City.
The appointment comes nine days after Derby gave Lampard permission to talk to Chelsea and 18 days after Sarri left Stamford Bridge
A statement issued by Derby read: "Derby can confirm they have granted permission for Chelsea to speak to Frank Lampard about the vacant managerial position at Stamford Bridge
. With pre-season fast approaching for both clubs it is hoped this will allow Chelsea to swiftly conclude their discussions.
Former investment banker Sarri has polarised opinion around Stamford Bridge
with his regimented tactics, drawing criticism from fans for taking time to hand home -grown talents Ruben Loftus-Cheek and Callum Hudson-Odoi central roles.
Sarri, meanwhile, feels his side blew a big chance to take control of the tie at Eintracht Frankfurt ahead of next Thursday's return at Stamford Bridge
The shirt features an eye-catching patterned design, which is meant to illustrate the different parts of Stamford Bridge
Chelsea usually have the game sewn up long before the end against Newcastle, but on Saturday evening the crowd were nervous and the moans and groans around Stamford Bridge
were evident as they managed to scrape over the line.
Everton the first side to stop Sarri's Chelsea scoring at Stamford Bridge
Mourinho urged the United players to focus on their performance rather than the 'awful' result at Stamford Bridge
, where a 96th-minute Ross Barkley equaliser denied them victory.
Argentina international Higuain's arrival at Stamford Bridge
would spell trouble for Giroud, who could win the World Cup with France on Sunday but soon find himself looking for a new club.
The statement reads: "Chelsea FC has obtained an injunction preventing unauthorised access to Stamford Bridge
and our Cobham training ground.
The Magpies have lost their last four games at Stamford Bridge
and managed to muster just one goal, which came in 2016 from Andros Townsend.