 Complete the following phrase:  Chapman became Arsenal manager. Needing a new centre-forward, he signed Lambert for 2,000 in June 1926. He made 16 appearances in his first season with the club, but only scored one goal. He also made 16 appearances in the 192728 season, but managed to score three times. He became a regular for the club towards the end of the 192930 season, during which he scored 18 times in only 20 league appearances, and was also prolific in that seasons FA Cup. His four goals in six appearances helped Arsenal reach 