Tenant asking to fix things and get a cut on rent

[Agustin Conti]

The tenant asked if he could paint the backyard patio and driveway (we have a rear entrance for cars from the alley). I said yes, and he mentioned that he would deduct the cost from the rent. I replied, asking him to send me pictures, and I would get back to him.

My understanding is that if the area is in bad shape, I need to maintain it. However, since he asked to paint it, I assume he wants to take the initiative. I will, of course, need to approve the color. Should I cover the cost fully, partially, or not at all? Attached are the pictures for reference.

Thanks,