On 7 April 2016, Botev Plovdiv announced that the expiring contracts of Ognyanov and the goalkeeper Valentin Galev will not be renewed for the next season. A week later Nikolay Kostov, the head coach and manager of Botev Plovdiv at that time, explained that he expected better performance and more engagement to the development of the younger players from Mariyan. On 18 April, the contacts of Ognyanov and Galev were terminated on mutual agreements. On 19 April Ognyanov received a medal of honor and special t-shirt to celebrate his 133 appearances in official games for Botev Plovdiv.