The Allams, who have a £150m fortune and run Melton-based Allam Marine, will release a statement confirming their control of the club, and the Superstadium Management Company, at lunchtime today.
At around the same time, Bartlett will publish a statement on Hull City's club website, confirming he has agreed to selling a majority stake in the Tigers.
It follows meetings yesterday afternoon between the parties, ahead of City's 2-2 draw with Leeds United at Elland Road.
The deal comes after weeks of speculation and following reports on Radio Humberside last night that Bartlett had walked away completely from the deal.
However, the Mail understands hands had already been shaken at that stage and that the Allams had agreed the takeover deal.
Although the official annnouncements are yet to be made, a source told the Mail: "The deal was done yesterday afternoon and the Allams are now have a controlling stake in Hull City and the Superstadium Management Company."
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