Arsenal brought in three top-level additions in the summer transfer window. The North Londoners signed Riccardo Calafiori, Mikel Merino and Raheem Sterling, so it was certainly a successful window. Though, there is still room for improvement across the squad and Arsenal chiefs are already plotting their Janaury business. It’s just come to light that they’re preparing a bid for an Inter Milan defender. READ MORE: £16.8m player who Arsenal have scouted has admitted that he likes the Gunners ‘a lot’Arsenal interested in Inter Milan defender Yann BisseckAccording to Inter Live, Arsenal are interes…