Applicant with low credit score but stable high paying job

[David McCracken]

I have an applicant interested in one of the flats in my duplex, who has a stable job as an engineer at a large company and makes over 70k a year. However his credit score is quite low (around 550), and it shows he has had two accounts that have gone to collection. He also has no prior landlords since he's lived at home while he went to school. I haven't had a huge amount of interest in this flat, and I want to get someone in as soon as I can. What should I do?