 Complete the following phrase:  Arsenal released Yaya Sanogo, Stefan OConnor, Kostas Pilea and Kristopher Da Graca on 9 June 2017. Sanogos four-year stay only included 11 league appearances for the club, while OConnor, Pilea and Da Graca never appeared for the first team. Academy product Chris Willock joined Benfica on June 30 upon the expiry of his contract, signing a five-year deal. Kaylen Hinds, another academy product, departed the club on 8 July, joining Wolfsburg for 2.5 million on a three-year deal. Additional reserve players Glen Kamara and Daniel Crowley also departed the club, joining Dundee and Willem II respectively. Wojciech Szczęsny, who amassed over 150 appearances for the club during an eight-year stay, joined 