Report: Titans “very interested” in Ken Whisenhunt

With the Chargers’ season over, the focus turns to whether San Diego offensive coordinator Ken Whisenhunt returns to the NFL head-coaching ranks. Whisenhunt, the Cardinals’ head coach from 2007 through 2012, has interviewed with Detroit, Cleveland and Tennessee for their head-coaching vacancies. He’s been linked to the Lions’ job since December, but the Titans are…