Islamabad: PTI founder Imran Khan has accepted resignation of Umar Ayoub as party general secretary.Umar Ayoub while expressing gratitude to Imran Khan for accepting his resignation has said he will continue to work as party worker with PTI founder.He said in a statement he was too burdened with working as opposition leader, dealing with the cases, seeing public meetings and other matters. Earlier I tendered resignation on June 22 which was not accepted.I had asked Shibli Faraz to covey my resignation to PTI founder. I learnt enormous from PTI leader while remaining general secretary for two years. I can not do more justice with the office of general secretary.