Manchester United are still in talks with Crystal Palace over a deal for Aaron Wan-Bissaka.
The Eagles continue to haggle over the transfer fee offered by United, who want to include a number of add-ons.
Palace want at least £50m for the 21-year-old right-back with the majority paid upfront.
United are keeping an eye on PSG's Thomas Meunier in case negotiations fall through, says ESPN.
The Belgium international represents a cheaper alternative, but he has previously stated his desire to remain in Paris.