Announcement is expected to come on Wednesday. The Seattle Sounders have a “major club announcement” scheduled for Wednesday at 1:30 PM. While Sounder at Heart has not yet received confirmation of what that will be, all our previous reporting suggests it is most likely to announce the promotion of Craig Waibel to general manager. It’s possible several other people in the organization will receive promotions as well. The general manager position opened last week when Garth Lagerwey was hired away by Atlanta United to take over as their CEO. While Waibel might not be the most exciting choice to replace…