The gap between Calafiori, Havertz & Saka and their alternatives who started many matches last season (Hincapie, Gyökeres & Madueke) is significant. Keeping the first trio fit for more matches this season is an upgrade without even considering transfers. Maybe the smallest gap is between Calafiori & Hincapie but given the strong defensive nature of the rest of Arsenal’s team, what Calafiori offers in the final third is more valuable than Hincapie’s defending.