Right-back worked with Matthias Jaissle at RB Salzburg Sunderland to announce signing of Dayann Methalie The chance to be reunited with Matthias Jaissle convinced Amar Dedic to swap Benfica for Newcastle in a £29.5m transfer. Dedic becomes Newcastle’s sixth signing of a turbulent summer on Tyneside and the 24-year-old Bosnia and Herzegovina international is likely to start at right-back at home to Liverpool on Sunday. “Working with Matthias again was a big factor for me,” said Dedic who previou…