Robert Foster remains in the leagues concussion protocol, after being out of practices since Tuesday. There is yet to be an update on Foster's status, but the absence from practice points towards an injury. (Marcel Louis-Jacques on Twitter)
Foster seemed to have a connection with quarterback Josh Allen in his rookie year, but that his since faded as the Bills have upgraded their receivers. Foster was already on the bubble of making the team's final roster so any missed time will hurt his chances. Hopefully Foster can return to the field and make the Bills roster, but if he remains in concussion protocol the Bills may look elsewhere to fill their remaining receiver spots.