CREATE TABLE table_name_49 (opponents VARCHAR, team VARCHAR, year VARCHAR)
SELECT opponents FROM table_name_49 WHERE team = "arsenal" AND year = "1963–64"
ฝ่ายตรงข้ามคนใดมีทีมคลังแสง และปี 1963–64?
Which Opponents have a Team of arsenal, and a Year of 1963–64?