Louis van Gaal expected to take over at Old Trafford after this summer's World Cup but the FAI chief has ruled out any involvement for the former Red Devils captainManchester United.
Louis van Gaal has agreed a deal to succeed David Moyes as permanent United boss after managing the Netherlands at this summer's World Cup, and it had been rumoured that Keane might take up a position as his assistant.
However, Delaney has been quick to rule out any imminent return to United for the former Republic of Ireland international.
"I was talking to Martin O’Neill the other day about this and I fully expect him and Roy to be with the Irish team managing to the Euros in 2016,” Delaney told the Irish Examiner.
"There’s going to be lots of speculation about who will be managing United in the coming months but, from our point of view, Martin and Roy will be staying with us for sure."
Delaney also dismissed the suggestion that Keane could effectively juggle both the Manchester United job and the Republic of Ireland assistant manager position.
"I don’t think anyone could do both jobs," he said. "You’re either working for Ireland or you’re working for a club."