Following his return to
Nice in 1953, Carniglia played two more seasons before retiring as a player and taking over the reins as the new Nice manager, from the British manager
George Berry. He had immediate success winning the
Ligue 1 title with Nice in his first year. The following season, 1956–57, saw Nice finish 13th in Ligue 1. Carniglia then left to take over the Spanish giants
Real Madrid. Nice replaced him with the French coach
Jean Luciano. Carniglia was Real Madrid head coach from June 1957 to July 1959 with a two-month stop from February 1959 due to a renal colic. Madrid, at the time, had some of the greatest footballing talent in the world with
Alfredo di Stéfano (holder of the
Ballon d'Or at the time),
Francisco Gento,
Raymond Kopa and
Héctor Rial. These greats were joined in 1957 by
José Santamaría and
Ferenc Puskás in 1958. Carniglia did not have a high opinion of Puskás when he arrived, as he had not played professionally in over a year and was considerably over weight. Carniglia whipped him into shape with Puskás losing 15 kg before his first
La Liga game against
Oviedo. Carniglia left Puskás out of the 1959 European cup final, which led to his being sacked by
Santiago Bernabéu, Following his mid season departure from Roma in 1963, apparently due to arguments with the club directors, he took over at A.C. Milan, the team he had beaten in the
1958 European Cup Final. Milan were the reigning European Cup holders and competed in the
Intercontinental Cup. They played the
Brazilian side
Santos featuring
Pelé at the height of his prowess in the final 1963 final. Milan won the opening game 4 – 2 in
Milan, Pelé scoring both goals for Santos. Before the second leg rumors began to circulate that the
Argentinian referee had been bribed, Milan tried to have match official changed but were barred from doing so. Santos won the second game 4 – 2, without Pelé who was injured. With the two leg final a stalemate, a third decisive play-off game took place in
Santos just 48 hours after the second leg. The same match official was used for the playoff game. In the third minute, of the playoff,
Giovanni Trapattoni was adjudged to have fouled a player in the box and Santos had a penalty, which they duly converted.
Cesare Maldini protested and was sent off. Santos won the fixture 1 – 0. Following his retirement as a coach Carniglia had a spell as General Manager of Boca Juniors with
Silvio Marzolini as the coach. He was the first president of FAA (Futbolistas Argentinos Agremiados), his home country's footballers union. ==Personal life==