Here are the possible fights he can arrange with: (within the same division)
Emanuel Navarrete - WBO Featherweight Champion
Kiko Martinez - IBF Featherweight Champion
Leigh Wood - WBA Featherweight Champion
Gary Russell Jr. - Title Defense (rematch)
I don't know if Magsayo's camp plan to unify this but it's a good target before testing the waters on 130–135 lbs.
If i were an adviser to Magsayo, i would take on Kiko Martinez first before going for the rematch or a unification bout with either Wood or Navarrete.
On the three, Martinez seems to be the weakest and a fight with him will give Magsayo more confidence going forward if he wins.
Money-wise, i think he would still receive substantial amount whoever he fights because his fight with Russell, it's been said by one analyst that Mark received 19M Php which for me a big amount already since he is just the challenger to Russell and if he defend or unify then we could expect that he will receive more.
Time to lock the thread guys and as usual, thanks for all your comments and congrats to those who win and also a big congrats to the new champion from the Philippines, Mark Magnifico Magsayo.
See you in his next fight, hopefully this year.