Whilst Mikel Arteta has overseen a ton of squad building at Arsenal in the past few seasons, this summer will be about adding a star or two. Arteta now has an excellent foundation for success, as his squad are currently demonstrating with five straight league wins. Kai Havertz is coming good, Leandro Trossard is thriving with more responsibility, and Bukayo Saka continues to prove he’s one of the world’s best. However, Arsenal’s squad can still be improved, and with a few players expected to depart this summer, players will need to be added. Perhaps Thomas Partey’s expected departure will be t…