Earlier speculation had LG behind the next Nexus handset, following up on the success it had with the Google Nexus 4. Earlier this year, rumors about an LG Nexus 5 contained specs that seemed too far reaching. Looking at those specs now, it sounds extremely similar to the LG G2 making it seem possible that a variant of the LG G2 would be chosen as the Nexus 5.
Still, a Motoroa Nexus handset has been rumored from the moment that Google purchased the manufacturer. Now that Motorola has worked through the pipeline it had built up prior to being purchased by Google, and the Motorola Moto X has whet the appetite of many smartphone buyers, this could be the opportune time to give Motorola this prime assignment.
source: Google+ via AndroidCommunity, SlashGear