For the 2005–06 season, Franzén played in the NHL with Detroit, totaling 80 games for 16 points (12 goals and four assists) in his rookie season. His workmanlike service was lauded by former teammate and captain Steve Yzerman, who gave him the nickname "The Mule" because "he carries the load." Franzén was named "Detroit Red Wings Rookie of the Year" by the Detroit Sports Broadcasters' Association for his play during the season. Franzen’s rookie season was also Yzerman’s final NHL season.