(CNN) -- Liverpool have completed the signing of Swiss international right-back Philipp Degen on a free transfer from Bundesliga club Borussia Dortmund.
Degen was a member of the Swiss squad during Euro 2008 although he did not play a match for the co-hosts.
The 25-year-old former Basel player, who will compete with Alvaro Arbeloa and Steve Finnan for a place in the Reds line-up, has signed a four-year deal with the Premier League club.
Degen, who was an unused substitute during Euro 2008, agreed to join Liverpool in May -- and he will soon be joined by Italian left-back Andrea Dossena, who is on the verge of completing his move from Serie A side Udinese.
Degen began his career with Basel in 1996, making his debut in 2001, before joining Dortmund in 2005. "His strength is going forward," said manager Rafael Benitez.
"He is an offensive player with great energy and a winning mentality. He is a good signing, a player of potential, who can help us improve in the wide areas," he added.
Degen -- whose twin brother David plays for Basel -- has made 26 appearances for Switzerland since making his international debut in 2005.