Chelsea are being linked with AC Milan midfielder Ismael Bennacer.
The Algerian international was on Arsenal's books between 2015 and 2017 - making just one first-team appearance.
His performances with Empoli earned himself a £14.5million move to AC Milan last summer - where he has put himself back on the radar of Europe's biggest clubs.
Calciomercato.com says Chelsea are interested in bringing him back to London - and could offer a cash-plus-player deal to secure their man.
AC Milan's asking price of around £45m could prove an obstacle for the Blues, who have already spent big on Timo Werner and Hakim Ziyech - with Kai Havertz also expected to sign imminently.