I'm still figuring it out what he saw on Ryan because personally, I'd pick Davis over Ryan. I may be wrong about this but I guess we will see once they share a ring.
Maybe he was challenge by Ryan Garcia and he likes to shut him up. Ryan could attract a good number of crowd as well, so in terms of revenue, there's still a chance that they will make a profitable fight. Actually, it doesn't matter if he start with Ryan Garcia, because if he beat him, he can have Davis next in line.