The 22-year old Australian-born midfielder came through the youth ranks at Bristol City before deciding to move his career down the US college path.
Rose was taken in by the UCLA Bruins in 2008 and has now become a regular member of Sigi Schmid's Sounders line-up with 18 appearances under his belt in his debut campaign.
Schmid admits that the club has always shown some interest in Rose and had to snap him up in a trade with Real Salt Lake after they took him with pick number six in the Supplemental Draft.
"When we didn't draft him, he was one of the guys I was thinking we should have drafted," Schmid said.
"I always thought his approach was very positive, very professional. That he listened, that he learned, that he tried to take on board what you told him and I thought over the years his game improved at UCLA every year and that's something that you look for in players as well."
Sounders technical director Chris Henderson added: "He does have that composure that you don't see out of a lot of kids right out of college.
"He's not afraid to speak up. During the game, he's chatting with guys, he's giving them information.
"A lot of guys don't have that confidence coming into a pro team their first year. That's going to help him. He's a guy that you can talk to him and he's really willing to learn, but I think all that experience leading up to his rookie year has really helped him."