After more than seven years at the Emirates Stadium, Holding quietly left for south London on deadline day. The centre-back was only a real first-team regular during the turbulent 2020-21 season, but still clocked up more than 150 appearances as a reliable squad player. A signing from Bolton late in the Arsène Wenger era, Holding bridged the gap between eras but struggled to keep his place as Mikel Arteta demanded more ball-playing skills from his defenders. Still only 27, the player once used by Wenger to justify reduced spending still looks seriously underpriced.