Thamsanqa Sangweni was signed by the Buccaneers from Chippa United this week and he was given a three-year deal as the club look to build for next season.
Pirates endured one of the worst seasons in their history by finishing 11th in the Absa Premiership and missing out on the top eight for the first time since 1987.
Their woes continued as SuperSport hammered them 4-1 in the Nedbank Cup final at Durban's Moses Mabhida Stadium last month, scuppering the club's hopes of winning something in their 80th anniversary season.
Since Siyabonga's retirement last year April due to a long-term battle with a knee injury, Pirates have failed to get someone of Sangweni's character to rise to the occasion when the chips are down.
During the former Bucs skipper's first season at the club in 2011/12, after joining from Golden Arrows, he won the treble and at the end of the season was named Pirates Player of the Season.
Following in his brother's footsteps puts plenty of pressure on Thamsanqa but his older brother believes his talented sibling already knows what is expected of him.
"He knows the philosophy here at home on what he has to do. Thami knows what he has to do when he goes to Pirates, he has to look after himself and that is what is important. He left home [Dondotha] and if he can't do that he'll quickly come back and stay with me here at home," Siyabonga joked.
"But everything is in his hands and I foresee a future for him but all that is left now is for him to prove it."
"As the family we are extremely excited that the Sangweni name is growing. But as I have said, everything hinges on him to deliver.
"Others who are in our family also will be looking at him with an eagle eye to do well. He'll have to double his effort to make it easy for them [future Sangwenis] but everything is in his hands now."