 Complete the following phrase:  Ahead of the new season, it was announced that Walcott had extended his contract with Arsenal after prolonged negotiations. Walcott netted twice in pre-season in wins against Everton and Wolfsburg, as Arsenal won the Premier League Asia Trophy and the Emirates Cup. He began the 201516 season starting at centre forward and assisting Alex Oxlade-Chamberlains winning goal in the 10 defeat of Chelsea in the 