NFL.com's Mike Garofolo reports Sammy Watkins will test out his injured foot on Wednesday or Thursday, and that it will determine his Week 4 availability.
Reggie Bush has played two snaps since Week 1.
Coach Rex Ryan said Monday he "can't say" whether Sammy Watkins (foot) will be ready for Week 4 at New England.
Marquise Goodwin caught 1-of-5 targets for six yards in the Bills' Week 3 win over the Cardinals.
Charles Clay was held catch-less on two targets in the Bills' Week 3 loss to the Cardinals.
Robert Woods caught 6-of-8 targets for 51 yards in the Bills' Week 3 win over the Cardinals.
Tyrod Taylor completed 14-of-25 passes for 119 yards and an interception in the Bills' Week 3 win over the Cardinals, adding nine rushes for 76 yards and a touchdown.
LeSean McCoy rushed 17 times for 110 yards and two touchdowns and caught 3-of-4 targets for six yards in the Bills' Week 3 upset of the Cardinals.
Charles Clay (knee) is active for Week 3 against the Cardinals.
Sammy Watkins (foot) is inactive for Week 3 against the Cardinals.
With Sammy Watkins (foot) out, Marquise Goodwin is expected to be the Bills' featured receiver against the Cardinals in Week 3.
The Bills will be without No. 2 CB Ronald Darby (hamstring) Sunday versus Arizona.
ESPN's Adam Schefter reports Sammy Watkins (foot) will not play Sunday against the Cardinals.
A Saturday night tweet from Sammy Watkins (foot, questionable) indicated he plans to play Sunday against Arizona.
CBS Sports' Jason La Canfora reports the Bills are "still holding out some hope" Sammy Watkins (questionable, foot) can play Sunday.