(CNN) -- Liverpool midfield player Sebastian Leto has signed a two-year loan deal with Olympiakos after being denied a work permit to play in England next season.
Leto has moved to Greek champions Olympiakos after being refused a British work permit.
The Argentine 21-year-old, who joined Liverpool from Buenos Aires-based Lanus in 2007, was granted an Italian passport last summer but it was later revoked.
"Olympiakos is a challenge for me. I know I will be here for two years," Leto told the Olympiakos Web site after passing a medical with the Greek champions.
"I've had two weeks of pre-season training with Liverpool and I believe I will be ready to do whatever I have to.
"Olympiakos are a great team who challenge for every honor in Greece and in the Champions League.
"The team has some good players, a well known coach (Ernesto Valverde) and fanatical supporters which always inspires them."
Olympiakos have also signed playmaker Alexandro Silva de Sousa -- also known as Dudu -- from CSKA Moscow.
The 25-year-old Brazilian has a three-year contract, the Greek champion said in a statement on Wednesday.
Greek media reports said the transfer cost euro6 million ($9.3 million), with the midfielder's annual salary at euro2 million ($3.1 million).
Juventus have signed Austria goalkeeper Alexander Manninger from Udinese on a four-year contract.
The Turin club said Tuesday that Manninger had already joined his new teammates for training ahead of Wednesday's friendly at Manchester United.
Juventus did not release financial details of the deal for the 31-year-old Manninger, who has played 27 times for Austria.
His former clubs include Arsenal, Fiorentina, Salzburg and Siena, where he played last season. Manninger joined Udinese only last month.
Italy goalkeeper Gianluigi Buffon is Juventus' first choice.