Gusto has slipped further down the pecking order at Stamford Bridge following last month's £43m arrival of Marco Palestra from Atalanta, and with Chelsea needing to offload players to stay compliant with financial fair play regulations, a sale before the window closes looks increasingly likely.
PSG officials believe the France international could provide genuine competition for Hakimi, and head coach Luis Enrique has given the move his approval, though the club are still assessing whether Gusto's profile justifies Chelsea's asking price, reports The Sun.
Chelsea want £75m for the 23-year-old, a figure SunSport understands PSG chiefs are still weighing up before deciding whether to proceed.
Manchester City were also reported to be interested back in June, with new manager Enzo Maresca keen to reunite with a player he worked alongside during his time at Chelsea. Gusto has made 134 appearances for the club since arriving from Lyon three years ago in a £26.3m deal, developing into a regular at right-back before his opportunities narrowed with Palestra's arrival.
Whether it is PSG or City who ultimately push hardest for his signature, Chelsea's stance on the fee appears unlikely to soften, with the £75m valuation representing what would be a considerable profit on the money they paid Lyon for him in 2023.
Chelsea's need to raise funds before the window closes adds another layer to the situation, with the club having already sold Marc Cucurella to Real Madrid earlier this summer as part of a broader effort to balance the books under Premier League and UEFA financial regulations.
Gusto's versatility and Premier League pedigree make him an attractive option regardless of which suitor moves first, and PSG's own need for squad depth behind Hakimi, who has struggled with fitness at times, adds a sporting rationale to the interest beyond simply having the financial muscle to make a move happen. With Chelsea not in European competition next season, the prospect of regular Champions League football elsewhere is likely to weigh heavily on Gusto's own thinking as the transfer window enters its final weeks.