Serie A Sassuolo are keen to seal an early permanent deal for loanee Blues keeper Aro Muric at a reduced price.
Muric joined Sassuolo on a season-long loan in August with an option for a €10 million (£8.7 million) long-term switch next summer.
According to Sport Mediaset, Sassuolo want to negotiate a small discount on the agreed figure.
Sassuolo are trying to negotiate a small discount on the figure agreed last summer.
Muric signed from Burnley for £8 million plus £2 million in add-ons in July last year, signing a four-year deal.
Author's summary: Sassuolo want to sign Muric early.