The 25-year old centre-half was selected by the Timbers in the 2010 MLS SuperDraft after two years with Columbus Crew and said he is eager to start playing in front of passionate soccer fans with the new outfit.
"I get to do what I love, which is play soccer. I'm fortunate enough to do that," Brunner told The Oregonian. "Especially going to a city where there is such a drive and passion for soccer."
Brunner was originally picked up by New York Red Bulls back in 2008 but was put on a developmental contract which forced his hand into signing for USL Division 1 club Miami FC.
He said the cost of living in New York was too great burden to carry especially with the small wage he was on at the time.
"I knew that I couldn't live on that money in New York. It was definitely a tough decision because you want to play at the highest level," Brunner added.
"But you also know that you have to take care of yourself. I had (college) loans I had to pay for and there was no way I could have afforded insurance, rent and a car payment in New York."
He said that he was excited about doing all he could to help the Timbers make an immediate impression on Major League Soccer.
"We're going to prove we're a blue collar team. We're going to work hard," he said.
"That's how I've been my entire career. I will lay my body on the line to win a game."