While neither team has made an official announcement, Damion Lowe certainly appears to be heading out on loan to Minnesota United of the NASL. The 22-year-old center back has been on trial with United for the past few weeks, is not currently listed on the Sounders' roster page and seemingly confirmed the move when he sent out this tweet:
Lowe, who is a Generation Adidas player, was a first-round pick of the Sounders in 2014. He has yet to make a MLS regular-season appearance after being hurt much of his rookie year and spending all of last season with S2.
Assuming this is a full-season loan, it would open up another spot on the Sounders roster and leave them with 25 players under contract. Among the unsigned players still in camp are draft picks Zach Mathers, Tony Alfaro, Michael Nelson and Emir Alihodzic. The Sounders could open an additional spot by placing Roman Torres on injured reserve.
The Sounders could also elect to keep those roster spots open as they look for more veteran players. As the CONCACAF Champions League quarterfinal showed, the Sounders attacking depth is almost entirely young and relatively unproven players like Darwin Jones and Aaron Kovar. They also are left with just one veteran center back, Zach Scott.