Ian White could see the writing on the Red Wings’ wall: He has no future in Detroit. As the Wings prepare for off-season changes, White is one of the guys who won’t be back. The Wings already have six defensemen under contract for 2013-14, plus two restricted free agents who will be re-signed in Brendan Smith and Jakub Kindl. White, who turned 29 earlier this week, is a month away from unrestricted free agency, a path that will put him in search of a sixth team since joining the NHL in 2005. White conceded as much as he took part in locker clean-out day at Joe Louis Arena days after the Wings lost in the Western Conference semifinals. White didn’t appear in any playoff games, and hadn’t played since April 7. “It’s somewhat doubtful they’re going to bring back a guy who’s not going to play,” White said. “Probably the most unfortunate part of our business is moving around all the time, switching teams.