eBay has signed a definitive agreement to sell its Skype communications unit in a deal valuing the business at $2.75 billion. The buyer, who will control an approximately 65 percent stake, is an investor group led by Silver Lake and includes Index Ventures, Andreessen Horowitz and the Canada Pension Plan (CPP) Investment Board. eBay is expected to receive approximately $1.9 billion in cash upon the completion of the sale and a note from the buyer in the principal amount of $125 million. The company will retain an approximately 35 percent equity investment in Skype. The transaction, which is not subject to a financing condition, is expected to close in the fourth quarter of 2009.