Dube gained admirers at Phunya Sele Sele last term and could earn a permanent deal in the City of Roses if he continues to add value in 2016/17.
"We agreed with Pirates with one season on loan and he will start training today... we are hoping to get him with an option to buy next season, so you never know."
Meanwhile, Ramabodu indicated Celtic have not received any offers for transfer-listed left-back Thabang Matuka.
"Nothing happened as yet with him as he's still with the club," he says.
Ugandan striker Geofrey Massa was transfer-listed alongside Matuka but has since linked up with PSL newcomers Baroka FC.