Full back Zane Kirchner and flanker Dewald Potgeiter, who captained the Emerging Boks in their 13-13 draw with the Lions, have joined the world champions in training this week ahead of the third Test in Johannesburg.
"They both did very well with the Emerging Boks. We are looking ahead to the Tri Nations and we are building for the 2011 World Cup," said De Villiers.
"While we are busy with our short term goal we are also putting in place our medium and long term goals, so we can't be caught with our pants down."
Sharks skipper Johan Muller has already been called into the squad to provide second row cover in case Bakkies Botha's appeal against his two week suspension is lost.