However , according to Leber ( appearing on KFAN radio ) , he has not filed his retirement papers with the league office , making him still officially available .
He announced his retirement from professional football on June 18 , 2012 .
According to Leber ( appearing on KFAN radio ) , he has not filed his retirement papers with the league office , making him still officially available .
He announced his retirement from professional football on June 18 , 2012 .