A source close to the couple tells E! that Odom, a forward for the L.A. Lakers, and Khloé recently have been "talking about rings."
Members of the Kardashian family are neither confirming nor denying the wedding plans or a date. A rep for both stars have declined to comment.
The planned marriage would be the first for Khloé, 25, and Odom, 29, who has had three children with longtime ex-girlfriend, Liza Morales. They have a 10-year-old daughter, Destiny, and 7-year-old son, Lamar Jr. (On June 29 2006, Odom's 7-month-old infant son Jayden reportedly died from SIDS while sleeping in his crib in New York.)