A top 10 ranking of Sunderland’s most expensive departures of all time, from Wahbi Khazri to Jordan Pickford. Sunderland fans have witnessed many of their star players leave for heavy sums of money over the years. While many of these have left the Stadium of Light on good terms, others have seen their time come to a controversial end. Jordan Pickford is the most prominent name on the list, with the academy graduate departing for Everton back in 2017. Many of Sunderland’s first team could also follow suit this summer after the club failed to gain promotion to the Premier League. This has seen p…