Saints kicker Garrett Hartley says he expects to serve a four-game suspension when the regular season begins because he tested positive for a stimulant.
Hartley says he obtained the Adderall prescription pills from a former college friend and used it to help him stay awake while driving from Dallas to New Orleans for an offseason workout.
Hartley says he was unaware that the stimulant was on the NFL's list of banned substances.
Hartley will be able to work out and play during the preseason, but the Saints also have added veteran 45-year-old kicker John Carney to the roster.
In other moves, the Saints have placed reserve linebacker Mark Simoneau on injured reserve because of his torn right triceps injury.