Salonika land Adu on loan
The 20-year-old former child prodigy told his Twitter social networking site earlier this week he had received offers from English Premier League club Hull City and Aris.
"Aris announces the agreement for the loan of Freddy Adu from Benfica for the next 1-1/2 years with the option to buy the player when that period has been completed," said a brief statement from Aris, who are fourth in the standings.
Adu is under contract at Benfica but had been on loan with fellow Portuguese top flight side Belenenses.
The forward, who can play as an attacking midfielder, has scored twice in 15 matches for the U.S. since his debut in 2006.