Sure...nobody knows what happened to Willie Cicci, because it is not depicted in GFII.

However, one can assume he met a fate somewhat similar to Frankie's since he did testify against the Family.

Someone on this board once mentioned some 'deleted scene' they saw where Neri beats Willie & then kills him...but since that never even ended up in The Saga, I have my doubts as to whether that ever existed.

Apple