Maybe the outcome of Canelo vs Jermell Charlo fight is very important because if Jermell Charlo were to win, I'm sure Crawford would see it as a good opportunity to fight Jermell Charlo by moving up, as a win would make him more popular.
How about Crawford - Canelo both have a claim to be a crowd drawer and a pound-for-pound king, I don't think Canelo can impose his skill and power against Canelo the way Crawford devastated Spence if they cross their path I hope they do, Canelo will have a beating more than what he gets from his fight against Bivol.
Crawford is already 35 not many years left in his boxing career, so his promoters and handlers should think of fighting fighters in the pound-for-pound list that he can fight in a catch weight.
That is a 3 weight, 21 pound difference. I doubt Canelo is capable of going down much further than super middleweight. If Crawford moved up and beat Canelo he would undoubtedly be considered among the greatest fighters ever. The difference is just too much for that fight to be possible any time soon. We could still get an idea of what would happen if Crawford fights Charlo and then we can compare their performance against the same fighter.
Definitely, however, if Charlo were to lose to Canelo, I think the fight between Charlo and Crawford might not happen as Canelo would become the champion, and therefore, if Crawford wants to challenge for the title, he would have to face Canelo at 154 lbs. But, I guess we are speculating too much for now; let's see the outcome of Canelo vs Charlo first, and then we can speculate on whether Canelo vs Crawford will happen.
As for Crawford, he can choose not to fight this year; he can enjoy the remaining part of the year by having a vacation, especially considering that he just made history this year.
The Canelo-Charlo fight happens at 168 for the Mexican's undisputed title. I guess Canelo is still the biggest name in boxing so there is no point in dropping down in weight, especially at 154 which is zero percent chance of happening. Besides, Canelo was already a former unified champion at 154 and even at 160. So the only titles at stake are Canelo's belts.
I believe Jermell won't return to 154 after the Canelo fight. But in case he will and provided the sanctioning bodies won't strip him because he's got overdue mandatories already, he might not give Crawford a shot at being undisputed at 154. Jermell is a very close friend of Spence and he already mentioned before that he won't give Bud that shot. Jermell believes that Bud has to work his way up to 154's rankings to earn his shot. Money speaks though, so we'll see if Jermell is willing. Besides, Bud being undisputed can also request any of the 4 sanctioning bodies to make him mandatory.
With regards to a possible Canelo-Crawford megafight, I already saw interviews before about Bud saying he is not moving up to 168 or 175. The guy is honest, direct to the point and he is smart knowing his limits. Here's Bud's latest clip I saw last week being asked again about fighting Canelo;
https://www.youtube.com/shorts/t8jPI_p4bhE