Riccardo Calafiori looks set to become Arsenal’s first major signing of the summer, but, in another world, Benjamin Sesko would’ve been an Arsenal player by now. Indeed, Arsenal were very keen on Sesko earlier this summer, but the striker ultimately decided to stay at RB Leipzig. Speaking to Nogomania, Sesko has now opened up on his decision to reject Arsenal and stay in Germany. The striker says that he had to think his decision through thoroughly, and he decided to stay at Leipzig as he wanted to gain more experience and not rush into the next step of his career, claiming that he felt Leipzi…