Certainly in the final straits now, but barring injury, I think he still has one fine moment left in him. Will still appear at the slams, in the grass season and be a great backup in Davis Cup, then retire on RLA. There are worse ways to end your career.
I hope he can put together one last finals run at a 500 tournament or one of the grasscourt warmups. I think for all his hard work on the tour over these many years he deserves to retire on Rod Laver Arena next year after a hard-fought night session instead of slowly fading away and having to call it quits on account of some injury incurred later this year during the 1st round of a 250.