Real Madrid are reportedly not open to selling Isco in January despite the attacker's struggles this season.
The 27-year-old has only made six La Liga appearances for Los Blancos during the 2019-20 campaign, while he has featured in just one of their four Champions League fixtures.
There have been suggestions that Madrid could look to sell the Spaniard at the start of 2020, but according to Marca, that is not an option in the upcoming transfer window.
A hamstring injury saw the attacker miss six matches earlier this season, but he has struggled to break into Zinedine Zidane's first XI upon his return to fitness.
In all, the playmaker, who has also lost his spot in the Spain squad, has scored 48 times in 284 appearances for Madrid since arriving from Malaga.
Meanwhile, the former Valencia youngster has a contract at the Bernabeu until the summer of 2022.