 He scored five goals in these matches.The 2014–15 season was also a successful one for Basel, but for Díaz it was an unlucky and unthankful season under their new trainer Paulo Sousa.Despite the fact that Basel won the championship later that season for the sixth time in a row  and despite the fact that Basel had entered the Champions League in the group stage reaching the knockout phase on 9 December 2014 as they managed a 1–1 draw at Anfield against Liverpool, Díaz totaled just 24 appearances during the first half of the season, 13 (from 18) League, 2 Cup (of 3), and just 3 (of 6) in the Champions League, as well 6 further appearances in test games.