 Complete the following phrase:  He was signed by Arsenal in the summer of 1948 for 10,500, as backup for Reg Lewis, who was only 28 but becoming ever more frequently injured. Lishman made his debut against Sheffield United on 4 September 1948, but after a promising first season scoring 13 goals in 25 appearances, Lishmans 194950 and 195051 seasons were marred by injury. Lishman was passed over for the 