with a transfer to Internazionale on a four-year contract for reported €16 million fee. He began his Inter adventure by winning the 2005 Supercoppa Italiana versus Juventus, entering in 63rd minute as Nerazzurri won at extra-time thanks to the winner of Verón. Later on 13 September, he made his league debut for his new side on 21 September by starting in the 1–0 away win over Chievo. On 24 November, during a Champions League group stage match against Petržalka, Samuel played in a line-up of 11 foreign players on the pitch, with Luís Figo being the only european. He finished his first season at Inter by making 42 appearances in all competitions, with the team winning the championship following the relegation of Juventus due to match-fixing, and Coppa Italia by defeating Roma 4–2 on aggregate, with Samuel playing on both finals, thus completing an unforeseen domestic treble. In the Derby della Madonnina on 23 December 2007, Samuel hurt himself whilst marking the Brazilian international Kaká, and a couple weeks later, he had reconstructive surgery on his anterior cruciate ligament. He was expected to be out until the end of the 2007–08 season. In actuality, he started training with the first team again in October of the 2008–09 season and promptly earned a first team place back under manager José Mourinho. He played his first match in more than nine months on 9 November by starting in the 1–0 home win over Udinese. Samuel was one of the most important players under Mourinho in the 2009–10 season, partnering Lúcio in defence as they won the Serie A title, the Coppa Italia, and the UEFA Champions League, completing a historic treble. He scored his first goal of the season on 20 October in the third Champions League group stage match versus Dynamo Kyiv which prevented Inter from losing; he headed home a Wesley Sneijder cross to make it 2–2. This draw extended Inter winless run in the UEFA Champions League to eight matches. Later on 9 January, Samuel scored a last-minute winner in the 4–3 win versus Siena by beating goalkeeper Gianluca Curci with a left-footed shot. His goal later resulted decisive as Inter won the title two points ahead of Roma. He played his 100th Serie A game for Inter later on 24 April in the 3–1 win over Atalanta. Samuel finished the season by making 42 appearances and scoring 4