Waiver claims are based on record.
Teams with the worst records get first claim. If Moss doesn't want to be there, tough titty to him. The only way for him to become an unrestricted free agent is if all 32 teams pass on claiming him. If that happens, the Vikings are responsible to pay him the remainder of his current contract.
Teams Adam Schefter reported were interested in him or need a WR include:
Buffalo Bills
Dallas Cowboys
Washington Redskins
Oakland Raiders
San Francisco 49ers
Miami Dolphins (to block Patriots/Jets from getting him)
New York Jets
New England Patriots