Added bonus, depending on their response you'll either gain respect for them or clarity on why you're moving on :) 

He also got all the work.I had a bonus structure set up with the contractor.

I always recommend run your numbers conservatively and if things pan out better its a bonus.

And it also depends on your overall exposure.

Full unfinished basement for you create a bonus flex space.

This took us from a projected breakeven year 1 (including vacancy and maintenance allowances) to pro-forma year 1 of $280/unit net monthly cash flow after all expenses including debt service.In addition to this we are doing a cost segregation report and anticipate additional tax savings year 1 of up to $24k by utilizing bonus depreciation.

Can be done but risky and lots of moving parts.Personally I just use business credit for the sign up travel bonuses. 

And if at the end of the year you want to give him “a bonus” so be it.

Or wouldn't it be a little bonus for the renters to stay longer? 

The unfortunate thing here is that investment properties foreclose at a higher rate than primary homes so many banks just don't want the exposure to this.