Art Thiel SportspressNW article - http://sportspressnw.com/2189231/2014/thiel-the-other-seahawks-packers-memory
"The Seahawks made a relatively unusual roster switch Monday, bringing back WR Bryan Walters to the 53-man squad and releasing fellow WR Michael Bates. No reason was given, other than getting different players for practice this week, but the speculation includes a potential trade for Bates that went away. If Bates clears waivers Tuesday, he likely will be retained on Seattle’s practice squad."
"The Seahawks made a relatively unusual roster switch Monday, bringing back WR Bryan Walters to the 53-man squad and releasing fellow WR Michael Bates. No reason was given, other than getting different players for practice this week, but the speculation includes a potential trade for Bates that went away. If Bates clears waivers Tuesday, he likely will be retained on Seattle’s practice squad."