Chelsea owners are reportedly keeping a close eye on Sevilla youngster Nico Guillén ahead of a potential move in a future transfer window.

The 18-year-old midfielder has attracted the attention of Chelsea’s ownership group, BlueCo, whose scouts are impressed by his development in Spain. According to Ficherio, BlueCo has been conducting extensive follow-up on Guillén after receiving positive reports about his potential. They are believed to be monitoring his progress closely, although there is currently no concrete offer.

Guillén has already had the opportunity to experience first-team football this season, despite his young age. He featured for Sevilla’s senior side during the opening stages of the campaign before returning to the club’s reserve team to continue his development.

Recently, he produced an eye-catching display for Sevilla Atlético, scoring twice in their 3-0 victory over Marbella. His second goal was particularly impressive, as he won possession, cut inside, and found the top corner with his left foot.

Chelsea will undoubtedly be encouraged by his recent progress, although they are not the only club likely to be keeping tabs on his situation. The Blues’ interest follows BlueCo's completion of a deal for another Sevilla academy product, Joaquín Martínez ‘Oso’, this summer for €10 million.

Sevilla is in a strong position regarding Guillén’s future, having recently handed him a new contract and increased his release clause, making it more difficult for interested clubs to pry him away. Sevilla sporting director José Ignacio Navarro has also confirmed that no formal offer has arrived for the youngster yet.

It remains to be seen whether Chelsea decides to step up their interest with a concrete proposal in the coming months. For now, BlueCo appears to be monitoring Guillén’s development closely, but another impressive season could convince them to make their move.