 Complete the following phrase:  Čech signed for Chelseas Premier League rivals Arsenal on a four-year contract on 29 June 2015, for a fee of around 10 million. His move saw him subjected to death threats by a few Chelsea supporters. The departure of Wojciech Szczęsny to Roma on loan made Čech first-choice goalkeeper ahead of David Ospina. On 2 August, Čech won his first trophy with Arsenal after beating former side Chelsea 10 in the 