Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: Africa's richest man Aliko Dangote has insisted his interest in buying Arsenal is not 'overnight stuff' and revealed he has been a fan of the club for more than 30 years thanks to former vice-chairman David Dein. Dangote, who is the 67th wealthiest person in the world with a fortune of £12billion, has explained his interest in The Gunners by explaining he was first taken to the club's former Highbury ground by Dein, a close friend and associate. Dein, a former sugar trader, helped Dangote start his business in 1980. Dangote Sugar Refinery Plc now accounts for 90 per cent of the product sold in Nigeria.Aliko Dangote insists his interest in buying Arsenal is not 'overnight stuff'Dangote claims he has been supporting Arsenal for more than 30 yearsNigerian is a close friend of former Arsenal vice-chairman David DeinStan Kroenke and Alisher Usmanov are the biggest shareholdersDangote claims he will have enough resources to pay what they ask for 
 Question:Using Dein's name leaves the fascinating prospect of whether the former vice-chairman will return to _ if Dangote becomes the club's new owner.

Arsenal