In August 2006, Franzén re-signed with Detroit on a three-year, $2.825 million contract. On 21 April 2007, during a Stanley Cup playoff game against the Calgary Flames, Flames goaltender Jamie McLennan slashed Franzén twice in the leg. McLennan was due to be assessed a minor penalty. However, after play was stopped, McLennan again violently slashed Franzén in the stomach, resulting in a game misconduct for McLennan. In the following game, Game 6, Franzén scored the winning goal in double-overtime to advance the Red Wings past the Flames.