If the issue aims to raise Ksh 7-10B, then the issue price will range from Ksh 15 - 21! (Ksh 120 - 170 at current prices). This assumes the quantity of newly issued shares are all offered in the rights.
The higher figure of Ksh 21 makes more sense and hence i anticipate a Ksh 10B offer.
Happy hunting
x handle: @stocksmaster79