 He played second-fiddle to youth graduate and Portuguese international Rui Patrício during his spell.When the team celebrated winning the Supertaça Cândido de Oliveira on 10 August 2015, Boeck doused striker Islam Slimani in champagne, angering the Algerian due to his Islamic faith's prohibition of alcohol.The following 8 January, he extended his contract until 2018 with an option for a further year.