USA international defender Oguchi Onyewu has completed a move to Portuguese giants Sporting Lisbon from Serie A champions AC Milan, signing a three-year contract.
The 29-year-old - who was loaned out to Dutch champions Twente last season by Milan - said he was determined to help Sporting regain the title.
Onyewu, who previously had a loan spell in England with Newcastle and also spent time at FC Twente, told the club website following his unveiling: "In every team that I have played, I have always given 200% and I will do the same for Sporting.
"I am at a massive club and it is a real privilege for any player to have the chance to play for Sporting. I want to help the team win the championship."
Sporting finished third last season and won the last of their 18 league titles in 2002.