A round-up of the latest Arsenal news as William Gallas divulges his honest thoughts about William Saliba and the Gunners warm to selling one of Mikel Arteta’s signings. Jens Lehmann is ‘disappointed’ with Mikel Arteta for Arsenal’s Champions League exitHighbury icon Jens Lehmann admits that he is ‘very disappointed’ with Mikel Arteta for how Arsenal bowed out of the Champions League to Bayern Munich. The Gunners succumbed to a 3-2 defeat on aggregate in the quarter-finals after they endured a 1-0 loss away in Bavaria. Goals by Bukayo Saka (12’) and Leandro Trossard (76’) on either side of Ser…