I haven’t seen any press release about the next fight of Pacquiao. All they say is Manny is open for a fight this March because the Senate is on a break at that period of time.
Any of the fighters who are in top rankings in the welterweight division is going to be a good match for Manny.
We can also see the ranking here https://box.live/world-rankings/welterweight/
Of the ranking based on the above link, its only Crawford and spence that I think would give a good fight to manny, at least if Manny wins it will not be an easy one since both fighters are both heavy hitters.
Either Danny Garcia, Crawford, and Spence will test the skill, speed, and power amidst old age in Manny. I want to see any of them take the gloves against the old legend actually. But Manny and his camp must be very careful in choosing the next opponent. They want someone who has got the name but also the lesser power that would not put their fighter in too much danger. The most probable for now is Danny Garcia. But they still have a lot of time for negotiations. Everything is still possible this time.