malky mackay 's tenure at wigan athletic might certainly be remembered as one of the costliest appointments in the history of english football .
sportsmail revealed in august mackay was being investigated over ` sexist , racism and homophobic ' texts .
dave whelan will also have to accept that his misguided decision to appoint the controversial scot in the first place has cost him his reputation and seriously harmed the image of a fine football club too .