The remaining 14 players are now in Spain ready for two final games before Prunty will announce his 12 man squad for the European Championship.
Prunty commented: "The guys have done an outstanding job for us from day one in camp. I appreciate the efforts made both on and off the court. All of us from the GB team thank them for everything they contributed and wish them the best in their upcoming seasons."
Larkai returns to re-join his Japanese side, Sendai 89ers, he said: "I am disappointed to be released but I leave a great group of guys and an excellent coaching staff. I have learnt a lot which I will take back to my pro club this season."
The Standard Life GB men's build-up to EuroBasket concludes this week when they face Spain on Wednesday night in Murcia and again on Thursday in Zaragoza.