ワルテル・マッツァーリ
On 25 March 2014, Guarín agreed to extend his contract until 2017. On 14 September, as a second-half replacement, he scored in a 7–0 home win against U.S. Sassuolo Calcio. At the start of the 2014–15 season, he began being used by manager Walter Mazzarri as a second striker.