The Atlanta Falcons are kicking off rookie minicamp this weekend, and there is a lot of excitement surrounding this crop of players. Six drafted players will report to Flowery Branch on Friday alongside 14 additional undrafted players and several camp invitees, but each will look to make a positive first impression.  Atlanta’s crop of rookie players will be both scrutinized and praised throughout the next several weeks and months ahead. As we approach that period of the offseason calendar, Falcons OnSI put together its most significant concerns for all six draftees.  Round 2 (No. 48): Avieon Terrell, CB, Clemson The story about the Falcons pairing the Terrell brothers will be one that fans eat up, but it could also prove an unrealistic benchmark for Avieon. After being drafted by the same team as his brother, comparisons will naturally follow, whether fair or unfair.  But these are two completely different types of players.  A.J.…