BSC Old Boys
Admir Seferagić made his professional debut for Basel on 17 August 2013 in the Swiss Cup against BSC Old Boys. He replaced Stephan Andrist after 74 minutes in a 0-1 away win. Ivan Ivanov scored the only goal for FC Basel in overtime. At the end of the 2013–14 Super League season he won the league championship with Basel. They also reached the final of the 2013–14 Swiss Cup, but were beaten 2–0 by Zürich after extra time. During the 2013–14 Champions League season Basel reached the group stage and finished the group in third position. Thus they qualified for Europa League knockout phase and here they advanced as far as the quarter-finals.