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Porto was the club that Suk Hyun-jun played for in 2016. He joined the Portuguese club on loan from FC Seoul in January 2016 and made his debut in a Primeira Liga match against Moreirense. Hyun-jun scored his first goal for Porto in a UEFA Europa League match against Borussia Dortmund in February 2016. He made a total of 14 appearances for Porto during his loan spell, scoring two goals.