Breaston, Sendlein and nose tackle Gabe Watson -- all restricted free agents -- signed their one-year qualifying offers.
Breaston is expected to move into the No. 2 receiver spot following the trade of Anquan Boldin. Breaston has caught 140 passes for more than 1,810 yards in his three NFL seasons.
Sendlein, an undrafted free agent out of Texas in 2007, has started every game for Arizona the last two seasons.