Joffa is married to Bosenavulagi's grandma's sister. But to Bosenavulagi, Joffa is more than just a great uncle, he refers to him as "grandpa".
"His development this year has been through the roof," Collingwood list manager Ned Guy said.
"Fijian background, really quick, really tough, rugby background, tackles really well. We’ll see him coming in and developing as a small forward for us."