Opportunity to buy duty-free French perfume new in getting it in the box (15)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

CHANEL (French perfume) with N (new) inserted, then CROSSING (in football, passing the ball sideways into the “box” in front of the goal so that a striker can score). Duty-free shopping is typically available when crossing international borders, such as the English Channel between Britain and France.