Despite scoring four goals in eight appearances this season, and receiving plenty of praise from manager Marcelo Bielsa, Nketiah is yet to start a Championship fixture for the Yorkshire outfit.
According to a report in The Sun, Bristol City boss Johnson is ready to renew his interest in the 20-year-old as the Championship promotion race hots up.
While Nketiah is contracted to remain at Leeds until the end of the season, Arsenal do have the option to recall him in January.
City were keen to secure the services of Nketiah during the summer transfer window, but he reportedly did not show up to scheduled talks at Ashton Gate as he chose to sign for last season's defeated playoff semi-finalists instead.
This season was supposedly viewed as Nketiah's year to get game time, before mounting a challenge for a starting spot at Arsenal next season.
However, with his playing opportunities being hard to come by so far,
He currently finds himself behind Patrick Bamford in the Elland Road pecking order, and with Tyler Roberts also on their books, Leeds are not short in the striker department.
The young striker said: "The manager wanted me to stay so it’s really confidence-boosting for me that he had me in his plans.
"I hope it's a good year that can leave me in good stead going back to Arsenal to fight for a place."