Chelsea are ready to launch an official offer for West Ham United midfielder Declan Rice, according to a report.

The Blues have spent big this year with the arrivals of Hakim Ziyech, Timo Werner, Ben Chilwell, Thiago Silva, Malang Sarr, Kai Havertz and Edouard Mendy.

Frank Lampard has refused to rule out one more signing, though, and the Evening Standard suggests that a bid will be lodged for Rice in the final week of the window.

Chelsea have been linked with the England international for a number of weeks, although United boss David Moyes recently warned the club's London rivals off making a move.

Rice has spent his entire senior career with West Ham and is rumoured to be valued in the region of £80m by the Irons.

The transfer window closes for English clubs next Monday.