Arsenal have completed their first signing of the summer after confirming on Arsenal.com that Stephan Lichtsteiner has joined the club on a short-term contract from Juventus. The new Arsenal boss Unai Emery is wasting no time trying to strengthen the team defence after they conceded 51 Premier League goals last season and he knows they need to improve at the back if they’re to challenge for the top four again. A new right-back has been identified as a priority as Hector Bellerin made 46 appearances last season and played more minutes 4,131 than any other Arsenal player so Emery has been on the look out for someone to lighten the load. Lichtsteiner emerged as a surprise target last week after reports claimed he had visited London Colney for talks over a free transfer move after running down his contract at Juventus. The Switzerland international has won seven Seria A titles during his time in Turin but at 34, the experienced right-back is set for a fresh challenge and he’s now ready to test himself in the Premier League Arsenal have confirmed on their official website that Lichtsteiner has joined the club on a free transfer after signing a one-year contract and will wear the No.12 shirt next season