 Landing at Spanish club Espanyol on 29 August 1935, Green was the first Welshman to have played in Spain at the time, making his debut in a 1-1 tie with CF Badalona in the Catalonia Championship and showing good touches of the ball.It was in a 3-0 victory over Osasuna that the defender-cum-midfielder delivered his first goal, leaving to London where he planned to marry, take a vacation, and return to Spain; but, on account of the Spanish Civil War, he never went back to the country.He played his first match on 16 March 1938 against Ireland and his last match on 21 May 1939 against France.