Wideman at the deadline next season is about 2.1 million. So at 50% retained on top of that, most teams could afford him.
Besides, if there's a few extensions of defensemen next season, such as Brent Burns, Del Zotto, Shattenkirk, Kulikov, and Franson, the defensemen available next deadline is a pretty weak class.
http://www.generalfanager.com/freeag...ll&RFA=1&UFA=1