TV Week quoted Zucker as saying the network had previously discussed giving its weeknight 7 p.m. timeslot to Winfrey, whose current ABC daytime talk show is wildly popular.
Zucker told the trade publication Winfrey declined the offer to switch networks and time slots, but said she might have considered it earlier in her career.
Zucker also said he is confident Leno's new show will be a success, even though it will be up against some of the other networks' most popular series.
"We're completely committed to this," Zucker said.
Celebrity Families of 2014 [PHOTOS]