Place the turkey carcass in a stockpot; add the water, onion, salt and bay leaves. Slowly bring to a boil over low heat; cover and simmer for 2 hours., Remove carcass; cool. Strain broth and skim fat. Discard onion and bay leaves. Return broth to the pan. Add the carrots, rice, celery and chopped onion; cover and simmer until rice and vegetables are tender. , Remove turkey from bones; discard bones and cut turkey into bite-size pieces. Add turkey and cream soup to broth; heat through.