joined the team for their 2014–15 season under head coach Paulo Sousa. After playing in one test game Samuel played his debut for his new club in the Swiss Cup away game on 23 August 2014 as Basel won 4–0 against CS Italien (GE). He played his domestic league debut for the club in the home game in the St. Jakob-Park on 31 August as Basel won 3–1 against Young Boys. Basel entered the Champions League in the group stage. They reached the knockout phase on 9 December 2014, as they managed a 1–1 draw at Anfield against Liverpool. But they were knocked out of the competition by Porto in the round of 16. Samuel scored his first goal for his club in the last match of that season on 25 May 2015. It was a home game in the St. Jakob-Park and Basel won 4–3 against St. Gallen. At the end of the 2014–15 season, Basel won the championship for the sixth time in a row. In the 2014–15 Swiss Cup Basel reached the final. However for the third time in a row they finished as runners-up. Basel played a total of 65 matches (36 Swiss League fixtures, 6 Swiss Cup, 8 Champions League and 15 test matches). Under manager Paulo Sousa, Samuel totaled 26 appearances, 13 League, 1 Cup, 4 Champions League, as well 8 in test games. He scored 2 goals in these matches. In June 2015, Samuel prolonged his contract with Basel for another year. However, on 16 October he communicated his intention to retire at the end of the 2015–16 season, due to physical difficulties. He made his 100th UEFA club competition appearance playing in the closing match of the 2015–16 UEFA Europa League group stage during the 1–0 away win in the INEA Stadion against Lech Poznań on 10 December 2015. Samuel played the final match of his career in a 1–0 home defeat against Grasshoppers, on 25 May 2016, at the age of 38. At the end of the 2015–16 Super League season, under new head coach Urs Fischer, Samuel won the championship for the second time. During his two seasons with the club, Saluel played a total of 61 games for Basel scoring a total of four goals. 21 of these games were in the Swiss Super League, five in the Swiss Cup, 11 in the UEFA competitions (Champions League and Europa