The R's are currently getting ready for a campaign in the Championship after failing to avoid relegation from the Premier League.
"Pre-season is all about bedding people in and getting a good group of lads together," Redknapp told the club's official website. "If we can get one or two in who are the right types of people, the right types of character – that will be key for us.
"If we can get the right players in, we'll be bang in it, that's for sure.
"I'm looking forward to it. I want to get promoted for sure, to get back in the Premier League."
QPR begin their bid for promotion at home to Sheffield Wednesday on August 3.