There is already a confirmed midfielder joining the Kop side in the summer.
RB Leipzig’s Naby Keita was signed last year on the condition he spent one last season in the Bundesliga.
“Ndidi approached by Liverpool. The player has agreed. It remains to agree with Leicester, who asks a lot,” Balde tweeted.
The 21-year-old has enjoyed his time at the King Power Stadium since joining in January 2017.
He joined from Genk for ZAR284.14 m and has managed 14 caps for his country to date.