How many caps for Italy were earned by the manager of Inter Milan when they reached the quarter-finals of the UEFA Cup after comebacks against Rapid Wien and Aston Villa?
1990–91 Inter Milan season:  Well placed in the league, the side also reached the quarter-finals of the UEFA Cup after comebacks against Rapid Wien and Aston Villa. 1990–91 Inter Milan season:  Trapattoni's team managed to progress to the final, beating also Atalanta and Sporting Lisboa. Giovanni Trapattoni: Giovanni Trapattoni (] ; born 17 March 1939), sometimes popularly known as "Trap" or "Il Trap", is an Italian football manager and former footballer, considered the most successful club coach in the history of Serie A. Giovanni Trapattoni:  Internationally, he played for Italy, earning 17 caps and participating in the 1962 FIFA World Cup in Chile.
i don't know