Trapping and relocating the cat and drawing the curtains on him or her are off the table.
Hopefully, the owner will treat me with the same level of respect that I would him if the roles were reversed. I am going to talk to him on Monday.
Ingenious solution @Rieguy. Thank you
Thanks for giving it a try. I like all animals so I can empathize with the situation from your end as well. Hopefully, the cat's owner understands too and takes it seriously, as well as the cat taking to the bell (some hate it and try to pull it off). Hoping for the best!