Derby County are demanding cash compensation from Chelsea to release manager Frank Lampard.

Chelsea would have to pay Derby around £4m in compensation if they appoint club legend Lampard as their new manager, reports BBC Sport.

With current boss Maurizio Sarri set to be confirmed as Max Allegri's replacement at Juventus, Lampard is the overwhelming favourite to take over.

However, Chelsea are yet to make contact with the Rams.

Lampard won 11 major honours in his 13 years as a player at Stamford Bridge.