Arsenal are already the best team in the Premier League, and they are working hard to become even stronger. Drop your instant reaction to Arsenal exploring a move to sign Vinicius Jr from Real Madrid Credit: Credit: Ricardo Larreina/Europa PressThe only weak position left in Arsenal’s squad if they sign Bruno Guimaraes and Vinicius JrArsenal have world-class players in almost every position on the pitch. David Raya is absolutely incredible, while the Gunners’ defence is comfortably the best in the Premier League, as proven in the last three seasons. In this window, however, the best Arsenal are likely to do is improve the two other problem positions in the squad with the signings of Guimaraes and Vinicius. That, however, should still be enough to retain the Premier League and go all the way in the Champions League.