Carolina Panthers starting cornerback Richard Marshall is back on the field after missing minicamp while upset about his contract situation. Marshall is participating in voluntary workouts this week at Bank of America Stadium. He said Tuesday he hasn't signed his one-year tender worth $1.759 million, but will before the start of training camp. Marshall is one of many NFL players with four years of service who would've been unrestricted free agents if the owners hadn't decided to end the collective bargaining agreement after this season. The move put different rules in place that left Marshall a restricted free agent with few options. http://sports.espn.go.com/nfl/news/story?id=5218529
