The 29 year is one of four former New Zealand and Australian internationals who will represent the kingdom in next weekend's Final Olympic Sevens Repechage tournament in Monaco.
The others are former Wallabies forward Lopeti Timani, Australian sevens international, Afusipa Taumoepeau, and Tasman winger Tima Fainga'anuku, who is a former New Zealand sevens representative.
Fekitoa will link up with the Tonga sevens squad already in Monaco after playing in Wasps' final English Premiership match against Leicester Tigers this weekend.