There was one name on everyone’s lips at the Emirates on Saturday night. Robert Pires, who wore Arsenal’s No 7 shirt with such distinction for Arsène Wenger’s Invincibles, could not stop smiling as he made his way downstairs from the press box for some half-time refreshments. “Bukayo’s back,” said the former France forward. A frustrated spectator as he battled an achilles injury and his side’s quest for silverware spluttered, Arsenal’s talisman could not have picked a better moment to rediscover his golden touch on his first start since the Carabao Cup final six weeks ago. After leaving Raúl Jiménez on his backside to set up the first goal for Viktor Gyökeres, Saka settled everyone’s nerves with a brilliant second goal and also played his part in the third. The only disappointment was that the England winger didn’t emerge for the second half – a move that Mikel Arteta explained was precautionary ahead of the second leg of their Champions League semi-final against Atlético Madrid on Tuesday evening.…