Arsenal have this week missed out on the signing of Benjamin Sesko, yet Mikel Arteta has seemingly already been told which striker they should now target instead. The RB Leipzig attacker committed his future to the Bundesliga side with Arsenal missing out on Sesko, who is now set to stay in Germany this summer despite being heavily linked with a move to the Premier League and north London. As a result, Arsenal are once again back to square one in their search to find a striker, with options such as Joshua Zirkzee emerging as potential alternatives for the Gunners this summer. Yet club legend P…