CSN Chicago "Bears cornerback and Chicago native Kelvin Hayden has stood at the edge of the abyss, stared into it, and fought back from it. Early in training camp 2013, Hayden tore a hamstring and was done for the season. He was coming off being the No. 1 nickel back, who played in all 16 games for 2012 and..." June 14
According to league source there's a "strong" chance Kelvin Hayden will be re-signing w/Bears.
Windy City Gridiron "The third one-year deal announced in the last two days. The cornerback missed all of last season, but was productive in 2012. Health will be a major factor as to whether he will be on the roster in September. Kelvin Hayden came to the Bears in 2012 after a long stint in Indianapolis and a short..." February 28
CBS Sports "Chicago Bears defensive back Kelvin Kayden will miss the 2013 season after suffering a torn hamstring the team announced on Wednesday. Hayden's injury actually occurred on Saturday during the team's 'Family Night' practice at Soldier Field. "Kelvin has worked so hard" safety Chris Conte said..." August 08
Daily Herald "The Bears re-signed cornerback Kelvin Hayden to a one-year contract Tuesday, the fifth of their own free agents they have brought back since free agency began March 12. The 6-foot, 195-pound Hayden became the regular nickel back midway through last season, his first with the Bears, and he is..." March 28