Martin O'Neill will take charge with Roy Keane his No2.
O'Shea said: "I had spoken a couple of times to Martin who said he had spoken to Roy during the TV work they had done together in the past so I knew the type of ideas they both had and that they enjoyed their conversations. I knew that was never going to be as big an issue as people have made out.
"It can only be good because of the type of personalities they are in terms of winning mentality, drive, hunger and motivation - all those things are needed for us to get going again for qualifying for tournaments again and giving a boost back to the fans as well.
"Roy is arguably Ireland's best ever player so having him in the dressing room for the younger lads and older lads to look up to and thinking that he is on our side wanting us to win. And we have Martin's experience. He will be the boss, he is the main man and we will be guided by him and the team he has in place and from knowing the two men and having them on our side it is going to be brilliant."
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