If there is a Pet Food Store near you,they will have free samples of premium food there.
I would take some,and leave them,with a wated dish,and an Old Towel,so that poor Starry Cat,will have something nice to sleep on.
A Can of Tuna would certainly attract his attention,just a little bit,to tempt him. And the most imprtant things to et him approach you,sohe feels confident.
Thats how, I now have the Friendship of Scrappy 2,my Kitten.