I recently started a new job, and my company is quickly growing and looking to hire more people. I want to refer one of my previous colleagues for a position in the company, but that person has not expressed (much) interest in the company. That person, however, has asked me what my experience has been like so far at the company. This person was also "keeping options open" and has told me that I would be a great person to work with again.
I offered to refer my colleague to out internal recruiting department, but that person has not responded even though said person has asked if I knew the hiring manager for a certain department. I have no doubt that this person could do a tremendous job at my current company and would fit in very well, but I do not know if I should send a referral to my company. I do not have this person's resume, but I can speak volumes about what this person had done at my previous company and give some meager background information to support it.
Should the referral be a two-way mutual agreement between me and my colleague or should I just choose to refer that person or not based on the conversation that has transpired?