If you can fit a ball valve of some form inline (when racking flat beer into sanke kegs I have a ball valve connector attached to the liquid end of the coupler but a barbed valve could get cut into the middle of the hose), you can fill both the cane and hose completely with sanitizer, and close the valve. It'll hold enough vacuum to pin the sanitizer in there briefly but will dribble out the ends so work quickly. Place cane into wort/beer (elevated obviously). Aim other end towards drain/dump bucket/whatever (below level of wort/beer obviously again). Open valve and let sani pull out your wort/beer, then when hose is full and sani all out, close valve again trapping it in the hose. Now place in vessel (or in my case attach to depressurized keg), open valve, and you're good to go.
Now, I do this with an auto-siphon, but I find when moving beer I get less O2 pickup (at least when a closed CO2 transfer isn't an option) this way compared to pumping the siphon so a regular racking cane will work fine. I mainly only pump the auto-siphon to force cleaner/sanitizer through the cane/tubing.