I think all of Jensen, Daley, Kronwall and Green will have the odd GM calling about them. Green and Kronwall are unlikely to move but Green would possibly waive his NTC to certain teams.
Jensen will get the most interest I think. Hes been playing big minutes, great skater, great underlying numbers and still young if he can get re signed. I think he would be pretty dumb to sign in Detroit without seeing what a righty like him can get on the open market. I think Daley will draw some interest from a contender that wants some depth on D. Hes been hurt and I dont think he would demand a crazy amount. He could be a good under the radar pick up for someone I think.
Up front I think Nyquist, Glendening, and Helm could all draw some interest. Nyquist is obviously a first line/top 6 addition to a lot of teams that can help offensively. Glendening is a high end face off guy, pest and PKer. There will be some teams interested in him. Last dead line Helm drew some interest from Boston but he had too much term left. With the wings having more cap space to retain some salary and a year gone from his contract I could see him drawing more interest this year.
Howard is a wild card. If a contender has a goalie go down I'm sure they will be calling the wings about Howard. Hes having a good season and has been a solid starter for years