Manny Pacquiao won a unanimous decision against Jessie Vargas in Las Vegas last November and will now take on Amir Khan on April 23 .
Pacquiao said in a statement in July that his priority is the legislature, and that a fight would not interfere with his senatorial duties.
He was criticized for his absences when he served as a Representative, CNN Philippines reported.
Pacquiao has justified his return to the ring by saying that boxing is his only means to support his family.
“Politics, to me, is a vocation not a means to eke out a living,” Pacquiao said in the statement.
According to a 2015 statement listing his assets and liabilities, the boxer-turned-politician was worth about $69 million.
Pacquiao is a firm political ally of Philippines president Rodrigo Duterte, and has often been discussed as a future presidential candidate.