Arsenal are reportedly closing in on a major attacking signing that could bridge the gap with Manchester City. The Gunners have made signing a forward a top priority this summer, with Slovenia international Benjamin Sesko believed to be a target for Arsenal, before that rumour was quickly quashed by the player and his club, RB Leipzig. Since then, Arsenal have been linked with a host of attackers, most notably Napoli superstar Victor Osimhen, who with a release clause worth £110m would become the north London side’s most expensive signing ever, after last year’s acquisition of Declan Rice. Yet…