None of the characters that were listed as prime suspects by Jane can be Red John.
When his private office was spied and information collected and given to Bob Kirkland, thanks to the stick Jane inserted between door he knows he's been spied but he dosen't react as this is a plan by him. He now wants RJ to act and Jane will be the one who will play him unlike earlier. 
But who Red John is?? The final season where his identity is gonna revealed starting September on CBS its a must watch to find out..