"The Bianconeri have made official a double signing," read a statement on club website www.juventus.it. "Both have signed a five-year contract until 2012."

Portugal international Tiago joins the Turin giants in a 15m euros (£10.1million) transfer deal from French champions Lyon.

The former Chelsea player made 22 league appearances in his first campaign with the Ligue 1 giants.

Almiron, 26, has been a target of the Bianconeri for the past year and has joined Juve on a 7million euros (£4.7m) transfer deal.

The Argentina international made 30 Serie A appearances for Empoli last season.

Earlier this week, Juve completed the signing of former Udinese striker Vincenzo Iaquinta, a member of Italy's World Cup-winning squad.

The Turin outfit gained promotion to Italy's top flight last month after being demoted to Serie B over the match-fixing scandal.