If you do a search on catio you might find lots of ideas that you can do for your porch. You could easily make a cozy spot for him to sleep as well as a place for him to eat. It might make him feel better. Also if you have a screen door, it might make it easier to begin some proper introductions between your inside cats.
Also please get him neutered. His instinct will be hormonal and he will begin to look for mates which often leads to wandering as well as territorial fighting. Unaltered cats just cannot help it, they are completely hormone driven. I know you don't want him wandering as well as getting into fights.
Look for low cost spay/neuter clinics in your area. A neuter and rabies shot ( usually required) runs about $50.
Also please get him neutered. His instinct will be hormonal and he will begin to look for mates which often leads to wandering as well as territorial fighting. Unaltered cats just cannot help it, they are completely hormone driven. I know you don't want him wandering as well as getting into fights.
Look for low cost spay/neuter clinics in your area. A neuter and rabies shot ( usually required) runs about $50.