Ndidi, 26, attracted interest from several outfits, including Liverpool, Bayern Munich and Nottingham Forest, in the summer transfer window.
The midfielder stayed put at the King Power Stadium and is now focused on helping Leicester win promotion.
Ndidi has been shining with the Foxes already this season and is again expected to draw attention soon.
His contract with Leicester will expire next summer and he could make a move on a free transfer.
According to Catalan daily Sport, Barcelona are keeping tabs on Ndidi’s situation and they are considering landing him for free next summer.
The La Liga giants are structuring their budget according to the financial constraints they are enduring.
Ndidi represents an attractive prospect for the Camp Nou side, but they are likely to face substantial competition for his signature.