A refusal to use version control is a big red flag. Version control makes sense in all but the absolutely smallest one-man project because it protects you from your own mistakes.
He's just totally off base.
The portions of the project that are exclusively mine are under version control. I may have to do version control for both of us. Perhaps if he sees the advantages or if it saves him from trouble, he might be motivated to use it, at least minimally (we're talking about learning git init, git add and git commit, essentially!).