Manchester City are pushing Sporting CP to drop their price for Nuno Mendes.
Italian transfer expert Fabrizio Romano reports City are interested in landing Mendes, who is viewed as a 'top left back for the future' by the Premier League champions.
However, the Manchester club have no intention of meeting Sporting's £43m valuation of Mendes and are seeking an agreement of around £25m instead.
City have spent big on full backs under Pep Guardiola's stewardship, spending a combined £133m on Kyle Walker, Benjamin Mendy and Joao Cancelo.
Mendes' superb campaign with Sporting saw him called up by Fernando Santos for Euro 2020, although he played understudy to Raphael Guerreiro for most of Portugal's journey.