"There's no doubt a convincing win over a guy ranked 13th in the WBO will fast track us towards our overall goal of being top five by the end of the year".
32 year-old Tupou brings the experience of nine years professional ringcraft to the fight.
"He (Tupou) has boxed 112 rounds in his career", says International matchmaker Stu Duncan.
"When you compare that to Parker who has boxed only 54 rounds, that tells you something.
"This is the most significant fight in Parker's career as there are three titles in all up for grabs with two of them being an official WBO unification challenge.
"There is no doubt the winner of this fight will be considered for a top five position with the WBO which, in turn, will place them firmly into world title contention".