Chelsea has been in discussions with RB Leipzig for several weeks, offering several players in exchange for Simons.
However, no deal has been reached between the two clubs. City has now expressed its interest in Simons.
City's James McAtee is reportedly interested in moving to Nottingham Forest, while Tottenham is trying to sign Savinho.
The City team has registered its interest in Simons, but no official offer has been made.
