Redknapp's side reportedly have a larger wage bill than Spanish champions Atletico Madrid and the club could be forced into making changes in the summer if they don't reach the top flight.
He told reporters: "At the start of the year, people were talking about wage bills all the time, but we had 18 players leave last summer, a lot of them we didn't want to keep, but there were a few we didn't want to lose.
"I think we've done quite well – we let those 18 players go and we were almost throwing a team together at the start of the season.
"How many more changes we make this summer will be up to the chairman, but the nucleus is there for a good team next year, whatever division we are in. It's a big game, but I don't want to go piling pressure on people, on players, on anybody really."
QPR face Derby County at Wembley for a place in the Premier League later today.