Ivory Coast icon Yaya Toure has rejoined Olympiakos on a free transfer.
The former Barcelona and Manchester City midfielder made his name at the Piraeus club in the 2005-06 season before embarking on his glittering career in Spain and England.
The 35-year-old said in a post on his official website: "It is an honour to be back at Olympiacos!
"When I left in 2006 I said I would come back and I am delighted to keep my word.
"I had offers from lots of clubs across Europe, Asia and the USA.
"Ultimately, I made my decision based on the special relationship I have with this incredible club.
"I am as hungry for success now as I was when I first arrived here many years ago and I cannot wait to help the club win the trophies the great fans of Olympiacos deserve.
"It is now time to let my football do the talking once again. Let's do this!"