By Freya Berry LONDON (Reuters) – Online gaming technology group Playtech has closed its books on a 10 percent share sale by founder Teddy Sagi, a source familiar with the matter said on Wednesday. Playtech had said on Tuesday that Sagi’s Brickington Trading Limited would sell about 29.3 million shares at 725 pence each through a secondary offer, reducing its stake to 39 percent. (Editing by Chris Vellacott)