Cohen put Global Tolerance on freeze last year and is offering 95 per cent ownership and £10,000 in the bank for the right person to take on the business.
Cohen, who claims the charity-focused PR business was profitable before he put it on sabbatical, is opening the offer up to anyone, "whether a starry-eyed graduate or someone who has been round the circuit a few times".
"They need to be someone with their own passion and an unswerving social vision, as well as a a belief in communications with a conscience," he said
"It would also be good if they had financial and business acumen, something I’ve lacked but managed to get away with more by luck than judgement."
Global Tolerance was launched by Cohen in 2003, and has since worked with clients including the Dalai Lama, TED, HRH The Prince of Wales and Mahatma Ghandi’s grandson.
However, he put the business on hold last year to focus on his wife and newborn daughter.
"It was one of the toughest decisions of my life but I have always believed in the vision of Global Tolerance, and what it stands for, which is much bigger than me or any individual and is about being a beacon for ethics," he said.
"I continue to live and breathe that but I never wanted Global Tolerance to be a lifestyle business; it is a relationship that requires depth and time and I want to focus mine on my daughter and wife."
Potential candidates will have to submit why they think they are right for the job through the agency’s website before being put through a series of interviews.
A selection panel from agency's board will oversee the final round of interviews, with the appointment due to be made this summer.
It is expected that the succesful candidate will then relaunch the agency, which remains on sabbatical.
Cohen, who is working on other projects including a book, will stay on as a non-executive board member and says a contacts list and website will also be included in the handover alongside other company assets.
He added: "This is about having an open source approach to the company’s trajectory. It will be up to the new leader of the agency to decide how best to relaunch Global Tolerance."