Tenants want to own, but....

[Benjamin Z. Pickens]

Currently, I have 1 rental property that has a mortgage. The tenants are eager to own the property as there are upgrades they would like to do. I am working with them on a lease option. The catch is they seem to refuse to get a loan. They have great income and no issues paying rent. They have newer vehicles which is indicative of good credit. At this point I believe it's going to come down to forcing them to get the loan or move out during the lease period. 

I just wanted to see if anyone else has dealt with this and if so how did you handle it?