The Brazilians are reported to have spent no less than R8-million to sign the Namibia international from Highlands Park at the start of the season.
Lions of the North co-director Larry Brookstone put up a price tag of R30-million on their top marksman's head before he was sold to The Brazilians once the club was sold.
Shalulile proved once again why he was the best buy for Sundowns during the off-season after scoring a brace in a 3-2 win over Stellenbosch in the Nedbank Cup last 32 on Wednesday.
"He is not a very refined striker, he still makes some elementary technical mistakes but you can live with those mistakes because he gives you his heart," said Mngqithi after Shalulile walked away with the man-of-the-match award.
"For me that is more than anything. When a player gives you everything that he can give you, you always have room for some of the mistakes he will make in that process.
"I think he is trying to repay the confidence the team has shown in him, and the president for investing so much to make sure that we get him.
"You expect a lot of players to be that selfless in making sure that it is not about them getting what they want, but they also give themselves to the team, and that is what Peter is doing."
The Brazilians also signed midfielder Mothobi Mvala from Highlands Park at the beginning of the season, and he has also impressed.
Aubrey Modiba - SuperSport United boss Stan Matthews has confirmed that the versatile left-sided player's move to Sundowns is done.
Luvuyo Phewa - This signing went under the radar, but Real Kings confirmed a deal with Sundowns for the former SA under-20 star. He has since been loaned to Chippa United.
Lesedi Kapinga - Black Leopards' most exciting player this year signed a pre-contract with Sundowns in January and was allowed to leave before the resumption of the 2019/20 season.
George Maluleka - 'Mido' signed a pre-contract with Mamelodi Sundowns in January and was then sidelined him from the team and allowed to leave for Chloorkop during lockdown.
Gift Motupa - Sundowns finally landed their long-time target during lockdown after missing out in past transfer windows.
Mothobi Mvala - The former SA under-23 star's move is a surprise considering the sheer volume of midfielders at Chloorkop. A quality signing Sundowns just could not pass up.
Peter Shalulile - The 16-goal Namibian striker has expressed his excitement about the move after Highlands Park was sold to Tim Sukazi.
Kermit Erasmus - Unveiled by Mamelodi Sundowns on a three-year deal.
Khuliso Mudau - The right-back has signed a five-year deal with Sundowns.
Haashim Domingo - The exciting Ajax Cape Town youth product was the second ex-Wits star to confirm to snl24.com/kickoff that he had joined Sundowns.
Grant Margeman - SA under-23 international midfielder Margeman was signed in 2019 and then sent to Ajax Cape Town for the 2019/20 season.
Jody February - February was signed from Ajax Cape Town in 2019 and then loaned to Cape Umoya United for the 2019/20 season.
Ricardo Goss - The goalkeeper was the first of three former Bidvest Wits players to indicate to this website that Sundowns had signed him.
Brian Onyango - The 26-year-old Kenyan defender was snapped up on a three-year deal after initially being unveiled by TTM.
Rushine De Reuck - The 25-year-old has been signed from Maritzburg United on a five-year deal.
