I know it's a longshot for him but if he somehow gets another ring as a main contributer on another World Series team then that could increase his chances but he's still going to need at least 4 good years. If he can average 12 wins a year until he's 39 with his usual 3.0 war then I can see a very good argument for him. If that all fell into place which is very possible then he would have close to 250 wins and a war of around 70. He might not have the exciting stats of Justin Verlander, Felix Hernandez, Clayton Kershaw and David Price but odds are at least two of them will fizzle out. I think Buerhles consistency may help get him in.
I doubt Buerhle pitches much longer though so i'm sure none of this comes close to happening. I'm just hoping it does.