Khan, a vocal critic of the government of Prime Minister Nawaz Sharif, had opposed staging Sunday`s final of the Pakistan Super League in Lahore instead of the UAE where earlier matches were played, citing security grounds.
Real, who took a commanding 3-1 first leg lead at the Santiago Bernabeu last month, looked to be facing a tough night in Naples after Dries Mertens finished off a great attacking move to give the hosts a 24th minute lead.
Wenger, who has been Arsenal manager since 1996, is out of contract at the end of the season and was the target of a protest from around 200 disgruntled fans prior to Tuesday`s game. At the final whistle, some fans held up banners calling for him to leave.
It was an evening of abject misery for Wenger, who was subjected to calls for his resignation from Arsenal fans before and after one of the most chastening losses of his 21-year reign.