NFL Media Insider Ian Rapoport reported Tuesday night that the Saints will sign veteran kicker Shayne Graham to replace Hartley. Rapoport cited a person informed of the impending deal.
A frustrated Payton hinted a shake-up could be coming after a second loss in three weeks. The team also waived cornerback Chris Carr.
Hartley's job had been in danger for some time. In November, the Saints worked out five kickers, including Graham and Neil Rackers, before making the decision to stand pat.
UPDATED: Payton announced Graham's signing during his Wednesday's news conference.