Rusagro Agroholding is negotiating with East African countries on grain supplies and may start them in the very near future, said Mikhail Rashkovetsky, head of trading and sales of Rusagro's agricultural and oil and fats business divisions, on the sidelines of the Russia-Tanzania Business Forum. African continent has a huge potential for grain supply, and the company plans to increase its presence in East and West Africa, Rashkovetsky noted.