"We promised our fans a diverse flavor of international soccer and are thrilled to bring Boca and Celtic to the Pacific Northwest," said Sounders FC Owner and General Manager Adrian Hanauer. "These two storied clubs have secured their place as elite franchises during the last century."
Celtic is making its fourth trip to Seattle and its third to Qwest Field. Winners of a record 34 Scottish cups and 42 league championships, the "Bhoys" from Glasgow boast a huge worldwide fan base. They are instantly recognizable for their green-and-white hooped jerseys. Celtic was the first British club to win a European championship in 1967. It met the NASL Sounders in 1981, and returned to face Manchester United in 2003 and Chelsea in 2004.