Patton wanted to re-arm the German army troops and use them as a strike force. That would have taken until Japan had been dealt with. So you would probably be looking at a fall, rather than a spring, kickoff.
Of course, Patton’s elimination took care of that option.
“Blood and Guts is Going Nuts,” by Christopher Leopold, 1978. Patton invades Russia after World War II. Used on Amazon.
I read this book years ago. If I’m remembering the correct book, he had imaginary conversations with Guderian.