Arsenal announce signing of Greece defender Sokratis Papastathopoulos

Arsenal have announced the signing of Greece defender Sokratis Papastathopoulos from Borussia Dortmund on a "long-term contract".

The 30-year-old becomes the third new arrival at the Emirates Stadium since Unai Emery was appointed as Arsene Wenger's replacement in May and has signed a "long-term" deal at the club.

He joins full-back Stephan Lichtsteiner and goalkeeper Bernd Leno in joining the Gunners ahead of the new season and will link up with former Dortmund team-mates Henrikh Mkhitaryan and Pierre-Emerick Aubameyang.