Did Pacquiao actually said that? Or is it just a writer who made up some stories to get an attention? Because I really don't think Manny Pacquiao is that dumb to consider fighting an undisputed boxer in what was toutred as the most challenging division. Crawford is already hard to defeat and the same goes for Spence. Let's not forget that Ugas defeated Pacquiao while Spence haven't had the hard time.
If you will read the article, he just answered the question but to make things clear, there's no plan for him about that from the very beginning. That's why he responded with
"Why not? If that’s possible?". It happened at the press conference on his upcoming exhibition match.
Personally for me and as I mentioned, it's better for Pacquiao not to return to an official fight. After all, he already cemented his legacy.
Besides, the supposed unification fight between Spence Jr vs Crawford is now in jeopardy this year and likely close to being a failed negotiation.