The former Celtic and Aston Villa manager is aiming to run the rule over as many players as possible over the course of the summer schedule
The Boys in Green are set to contest four friendly matches in May and June against Turkey, Italy, Portugal and Costa Rica, pending confirmation, and O'Neill is focused on seeing as many players as possible ahead of the qualifying stage of Euro 2016.
"We have a couple of friendly matches at the end of the season. There's a possibility at this minute of maybe even a few extra games, but that has not been confirmed yet," O'Neill told Sky Sports.
"But a bit like Scotland in that sense, we are concentrating really on trying to implement some sort of a plan, trying to see as much of the players as we possibly can.
"This period we will have at the end of the season, while not ideal for players, is absolutely fine for us and of course, it's an opportunity to see as many players as possible."
Ireland's first friendly game of the summer will take place in Dublin on May 25 against Turkey before O'Neill and his team travel to London to face Italy on May 31.
The Boys in Green will then travel to the United States, where they are provisionally scheduled to take on Costa Rica on June 7 before coming up against Portugal on June 10.