A round-up of the latest Arsenal news as Mikel Arteta looks to buy a player Arsene Wenger sold and another transfer target is ‘frustrated’ at his Premier League team. Arsenal target Alexander Isak is ‘frustrated’ at NewcastleNewcastle United striker Alexander Isak is ‘frustrated’ by the Magpies’ sluggish season amid Arsenal considering a transfer. That is according to HITC Football, which reports that scouts for the Emirates Stadium team have checked the 24-year-old out this year in view of a move. Isak could also boost Arteta’s hopes for Arsenal sealing a transfer if Newcastle fail to qualify…