James Milner insists he has not become frustrated at having to play a bit-part role since his £12million move to Aston Villa.
Milner became the club's record signing when he made the move from Newcastle last month but has so far been restricted to a series of substitutes' appearances in the Barclays Premier League with O'Neill keeping the same side for the opening seven games.
Milner said: "Don't get me wrong, every footballer wants to play but the lads have been brilliant all season. There's competition for places and you have to play well to stay in the side."
He added: "That's the way it should be, it's healthy. I haven't been frustrated at not getting games.
"I'd be delighted if we won every game with me sat on the bench. What's important to me is being part of a massive club doing well on a number of fronts."
O'Neill has hinted he could bring Milner and former Rangers central defender Carlos Cuellar into the team for the home league clash with Portsmouth on Saturday week.
Former Rangers player Cuellar, who cost £7.8million, has so far been restricted to starting appearances in the UEFA Cup.
O'Neill said: "I've made my views clear on the two lads (Milner and Cuellar). I think they are excellent. They are great acquisitions and it was difficult to change a winning side before.
"They appreciated that but James and Carlos are quality players."
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