O’Shea was questioned about the decisions made by players like Rice and fellow Three Lions star Jack Grealish when they were considering whether to represent Ireland or England in their earlier years.
As he prepares to take on the English, O’Shea says he never gave much thought to those situations.
He told reporters: "No, not at all.
"Look, it's one of them - it's a focus on us, the players that are here, the players that want to be here. It's as simple as that.
"He's not here, he's in the England squad so you can't keep talking about it."