One Arsne Wenger was the chant ringing around the Emirates. Up in the directors box, the old master responded with a wave. Gabriel Martinelli had just put Arsenal in front, some of the football was reminiscent of their glory years and, on his first visit since departing emotionally in 2018, the architect of those times would have been forgiven a sense that the good old days were coming back. Perhaps they really are. Altho