It is theoretically possible to reduce the barrel length by 1.46mm and replace the EF mount with an M42 threaded flange. Since the same lens is also offered in the Nikon F-mount, it's almost certain there's enough room at the back to shorten it to M42 length without getting into any internal parts of the lens. One could then use an M42 to MC/MD adapter, which are commonly available, to use the lens on a camera with the Minolta MC/MD mount.
Normally, you'd still have the problem of not being able to control the electronic aperture of an EF lens. But the lens in question does not allow the camera to control the aperture at all. It has a set of Waterhouse stops that are mechanically switched by the user.
It's also a manual focus only lens, so there's no issue with AF communications.
There are no electrical contacts at all on the back of this lens to worry about. So even though it is a newer lens with modern lens coatings, in terms of the mechanics of the rear of the lens it is essentially an old legacy type lens with modern bayonet mount flanges on the back.
I would not recommend trying this yourself, however. There are a few people/places that are well-experienced in modifying lenses from one mount to the other. I'd recommend getting on some old "legacy lens" forums and finding out if anyone knows someone in your area/country that you could pay to do the conversion for you.
Failing that, you'd probably be better of to just sell it to someone who wants the lens in EF mount and find another deal on a legacy lens with similar properties.