Multiple players with the same jersey number is exceedingly common—indeed, inevitable—during offseasons in the NFL. After all, there are only 99 eligible jersey numbers for 90 players, and some numbers could be retired or out of circulation for an individual team, while there also remain some restrictions on which numbers different positions can sport.
It’s typically not a problem, as in the vast majority of cases, one of the players wearing the same number as another is not going to make the team. On other occasions, one is clearly a starter and the other is a reserve, or one is a long-term veteran with the team and the other a newcomer.