KickOff.com yesterday confirmed AmaZulu's interest in former Maritzburg United midfielder Morton and the deal has been completed.
Morton, who had one year left on his SuperSport contract, completes a permanent move to Usuthu whilst Pule is on a season-long loan at the Durban outfit.
Mpeta spent last season on loan at Dikwena, making 11 starts, and as revealed by KickOff.com has made his switch permanent.
Matsatsantsa confirmed in a statement the release of the trio - citing a lack of game time for Pule as the reason behind his loan move.
"Goalkeeper Pule [joins] Amazulu on a season long loan deal after losing out on game time behind Ronwen Williams and Reyaad Pieterse," said the statement.