"It is a new challenge for me and one that I am keen to start," Finkler said. "Ernie has shown me what he wants to do in the next couple of years and I want to be a part of it. The club wants to grow and I want to help them win trophies."
Finkler said having Barbarouses at the club would be a big plus.
"It helps you settle in if you have a close friend with you," he said. "Besides being a friend Kosta is a smart, quality player and we combine well."
Phoenix general manager David Dome said Finkler's signing was part of an overall strategic plan and the signing of quality players was a crucial strategic pillar.
"The owners and Board have made a strategic decision that the best way to ensure the long-term financial success of the club is in part our ability to play entertaining, exciting football to attract more spectators and viewers and to give us the best chance of winning the A-League," Dome said.