 Complete the following phrase:  Aged 24, he was signed by Tottenham Hotspur for 32,000 in March 1959 making his debut on 21 March in a 31 home win against Manchester City. During the 1960s his fierce determination and skill contributed to the team which won the Double in 196061. As double winners Spurs played in the 1961 FA Charity Shield against an FA XI which Spurs won 32. In that 1961 FA Cup Final they beat Leicester City 20. They retained the trophy when they won the 1962 FA Cup Final beating Burnley 31. This put them into a second successive Charity Shield. In that 1962 FA Charity Shield they beat Ipswich Town 51. This put Spurs into the 196263 Cup Winners Cup. However Mackay missed the 51 