With left tackle Donald Penn already on the shelf for several weeks with a calf injury, the Buccaneers today determined third-year receiver Arrelious Benn could miss a month with a knee sprain. Benn appeared to injure his right knee in Friday's morning training camp practice. Coach Greg Schiano did not comment, saying he needed to consult with trainers first. The news is a blow to the Bucs, who still have high hopes for Benn. The former second-round pick has started 23 games in his first two seasons and already has dealt with a left ACL tear in December 2010. Source: Tampa Bay Times