It makes complete sense. But before I get into that, let's delve into the timing of him being caught. Notice he has never been busted for innocently eating Mexican steak while he is in camp? This only happened when he was out of camp? In all those years? It's because fighters don't expect to get tested out of camp. So the fact that he gets tested out of camp and gets popped for it immediately is worth having an open mind about.
You need to know that fighters use peds outside of camp. That's how a number of them don't get caught. If you only fight twice a year you have lots of time to not get caught. If you want to fight 3 times or more a year, it's much harder to use them because there is another 2 to 3 month period where you are under the microscope. Clen gives results and helps fighters ina and out of camp. It's not like taking steroids and not working out, that's not how clenbuterol works.
Clen will make Canelo already be in peak form for longer and he'll already catch his stride and be able to hold it for much longer without having to manage weight. Ricky Hatton struggled to get back into shape between camps for a few reasons - and he is an extreme example - but he had a lot of weight to take off. Canelo now doesn't have to manage his weight and conditioning. His body is already primed. Essentially he has a year round fighter's respiratory ability and low fat percentage without having to fight year round. He can do less and get more.
And, for the record, I really want Canelo to be innocent. I absolutely do, and this is part of my discontent. He botched it.