Turner had also been strongly linked to Liverpool this summer
Hull City manager Phil Brown has claimed that he had no option but to sell Michael Turner to Sunderland.
The 25-year-old defender, who joined Hull for £350,000 in 2006, moved to the Stadium of Light for an undisclosed fee - thought to be at least £6m.
Brown told BBC Radio Humberside: "Once a player makes reference to wanting to leave, you have to activate that kind of deal whether you like it or not.
"You have to listen when the player's heart is elsewhere."
Turner, who joined the Tigers from Brentford, had his head turned according to Brown.
In terms of a straight replacement - we've bought a different player
Hull manager Phil Brown on new defender Ibrahima Sonko
The manager said: "It was made known to him that they [Sunderland] were in and consequently the player comes and sees you and asks your evaluation. He thinks it's unreasonable what your evaluation is, however, you stand by that and try and keep the player at your football club."
Meanwhile, Brown says it is time to move on and he believes that Ibrahima Sonko, who has signed on a season-long loan from Stoke City, will add experience to his squad.
He said: "He is a big giant of a lad. He can head the ball similar to what Michael Turner can do but in terms of a straight replacement - we've bought a different player."
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