Roman Burki has joined Borussia Dortmund from Freiburg

Swiss international goalkeeper Roman Burki has joined Borussia Dortmund from relegated Freiburg on a four-year deal, the Bundesliga club said on Sunday.

The 24-year-old, who played all 34 games as Freiburg were relegated this season, will provide competition for the 34-year-old German international Roman Weidenfeller.

Having picked up two caps for Switzerland this season Burki signed with Dortmund until 2018 for a reported sum of 4.5 million euros.

He is the third player to join since Thomas Tuchel took over from Jurgen Klopp as coach as midfielders Gonzalo Castro joined from Bayer Leverkusen and Julian Weigl signed from Munich 1860.