Leave him some fish
We have a barred owl that visits regularly now.We leave him fillets of fish in the tree off our front deck. I did not realize it until I did some home work,but barred owls can live 10+ years in the wild.He will also help keep the mice and rabbits under control.I would not try to tame one,but ours is friendly enough now you can talk to him without him being scared off.Barred owls are one of the few species of birds that can recognize specific humans by our faces,so if he spots you putting fish out he/she may think you are alright lol.They are also the only owls in North America that do not have yellow eyes.I would be careful and put fish out well before you expect him to arrive the first few times.It took a few weeks for Egor to get used to us,and my first attempts at putting fish out scared him away for a few days.The other thing you could do to "help" him out is place a little bird seed around that stump to attract rodents,but place it far enough away they have no cover from your owl.
Egor tracking a mouse,that was eating bird seed under our feeder.He has gotten more than one mouse for sure