The 44-year-old No Doubt vocalist is apparently close to signing up to replace Christina Aguilera, who will be heavily pregnant at the time of season seven's Battle Rounds, reported Ace Showbiz.
NBC wanted Aguilera to stay during her pregnancy but she has already been having a difficult time which has made her to bow out of the show. She is expected to return for the eighth season.
If the one-season deal works out, Stefani will join Pharrell Williams, who has been confirmed as a new coach on the show replacing Cee-Lo Green.