Despite playing linebacker for the majority of his college career at Lake Forest (Division III-A), Casey is trying to make the transition to fullback. Daimon Shelton and Stanley Pritchett are clearly going to be the starter and backup at the position, but both will be thirty years old by the end of the season.
The chances of Casey making the team are slim; however, if he can show the coaching staff that he's making progress over the next two weeks then a trip to training camp could earn him a spot on the practice squad.
At this point, talk of Casey getting a chance because he's Brian's brother should subside. With Brian tied up for nine years, Casey will have to make the team based solely on his own merit.