The Detroit Lions are signing free-agent safety C.J. Gardner-Johnson to a one-year, $8 million deal, multiple media outlets reported Sunday night.NFL Network reported that the deal includes $6.5 million fully guaranteed.Gardner-Johnson, 25, recorded an NFL-best six interceptions and 67 tackles — both career highs — in 12 games (all starts) with the Eagles last season. ESPN reported that Philadelphia offered Gardner-Johnson a multi-year contract at the beginning of free agency, but he turned it down believing he had higher value.