Government Funded Medical Clinic, Requesting 5-10% of Purchase Price

Owner is retiring (early 50s), him and his wife will stay for 5 years to run and manage the company. The banks are willing to finance 50-60% and the seller is taking back paper with no interest that is postponed till the bank is paid back for 30-40%. We are setting the deal up for 90-95% debt and 5-10% equity. We need an investor for that 5-10% equity. Our management team previously owned 19 clinics, has the prior CFO of CIBC Insurance and has done over $2B in acquisitions combined.