The 73-year-old coach, who guided the Irish to their first European Championship since 1988, was forced to defend his line-ups and tactics after defeats by Croatia and the world champions condemned his side to an early flight home.
Ireland face Italy in their final Group C match on Monday in Poznan with only pride at stake, although should the Irish avoid defeat the Italians would also fail to reach the quarter-finals.
With mounting criticism over Ireland's performances, the wily Italian is under pressure to blood younger players with a view to the qualifying campaign for the 2014 World Cup.
"If we change now, suppose Italy beat the Irish? Will you think Spain or Croatia will be happy? Maybe they will think that I made it easy for Italy if I change two or three players," Trapattoni told reporters at Ireland's Gdynia training base.
"UEFA say that managers must put on the pitch their best team, the strongest team. I can change five or six players in the friendlies in August but not now.
"If I play the young generation against Italy there might be the perception that I am favouring my own country. I do have changes in mind but I can't put three or four or five new names in because I would be accused of that.
"I am loyal to the players who brought us here and they deserve to be here."
"I think there are too many eyes in the world watching it now and I think it will be difficult for that to happen nowadays. There were not so many eyes in 2004 when Italy got knocked out.
"But anything can happen in this life. I have seen a lot, I have white hair."
One of Italy's most successful coaches was also forced to defend his own performance following comments by former Ireland skipper Roy Keane who said the country's fans expected more and were not just in Poland for a "sing-song".
"When there is a bad result there is only one [person] responsible, the manager," he said.
However, he remained puzzled by Ireland's displays.
"We had the players to play this tournament... we had the determination the mentality but I saw a situation I never saw in two years.
