Villa and Bayer have announced the two clubs have struck terms over a fee of €35m for the Jamaica international.
And Bailey's former Belgian club Genk will be due a significant cut of the fee generated.
Voetbal24 says a hefty percentage is due Genk, meaning €4m will be pouring into their coffers in the coming months.
Bailey is due for a medical in England in the first-half of this week.
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