The striker fell out of favour at Bucs and he was subsequently loaned out to Baroka FC where he impressed, scoring nine goals in the PSL during the 2017/18 season.
Motupa has stated that his challenges at Pirates only made him stronger having joined the club in 2015 from Baroka.
“I would have loved to (win trophies at Pirates) but I quickly accepted my situation. And I have grown from it; from that time to now I am becoming a better player," Motupa was quoted as saying by IOL.
The Buccaneers sold Motupa to Chippa United at the end of last season, but the Chilli Boys surprisingly decided to sell the Limpopo-born player to Wits in the same transfer window.
“I appreciate the time I spent at Pirates and Baroka, but I have to shift my mentality to Wits now and try and win trophies,” he explained.
Motupa, who represented South Africa at the 2016 Olympic Games in Brazil, is highly-rated by Wits head coach Gavin Hunt.
"For me he’s got a little bit of baggage. By that I mean how to play the game and what’s required," Hunt said.
"In terms of his ability, I don’t see anybody in South Africa that can shoot like him and he’s got game intelligence that needs to be sorted out. But it is taking time to knock certain things out of him," he added.
The four-time PSL title-winning coach is working on improving the 24-year-old player, who has an eye for goals.
“When you work at big clubs there is very little individual coaching going on - they bring players in and they have got to hit the ground running,” Hunt continued.
“If you don’t make it you are out, especially as a striker. Players like him need to be coached individually a little bit more. We can do that here," he explained.
“No disrespect to Pirates, but when they bring in a striker he must score goals (immediately) and that usually means they won’t do a lot of work on him," he added.
“I have said to him (Motupa) that he’s got to be in the national team,” Hunt concluded.