Chelsea are reportedly unlikely to sanction a move for West Ham United midfielder Declan Rice before the end of this summer's transfer window.

Blues boss Frank Lampard is believed to be desperate to bring Rice back to Stamford Bridge and ultimately convert him into a central defender.

However, according to The Athletic, Chelsea's hierarchy have reservations over a deal, which could cost the London giants in excess of £70m.

The report adds that some members of the board are still unsure whether Rice has addressed the 'technical deficiencies' that saw him released from the club at the age of 14.

The Hammers have the England international on a long-term contract until the summer of 2024 with the option of an additional 12 months, placing them in a strong negotiating position.

Rice played the full 90 minutes as West Ham started their 2020-21 Premier League campaign with a 2-0 home defeat to Newcastle United on Saturday night.