The 24-year-old joined the Rs from Bristol City last month, and sealed his Loftus Road debut with a goal against Huddersfield in their 2-1 defeat on Saturday.
Freeman, who came on for Jamie Mackie early into the second half and scored seven minutes later against the Terriers, thanked Ollie for giving him a chance to show his worth.
"He has been absolutely brilliant with me. He's given me all the confidence in the world, which is what you want with a player like me,” said Freeman.
"I can't thank him for anymore than what he's done at the moment. He's given me a lot of confidence and given me a chance to go out there and show what I'm capable of doing.”
Freeman was one of the club’s arrivals in the January transfer window along with former Fulham striker Matt Smith, Lazio loanee Ravel Morrison and former Manchester United midfielder Sean Goss.
The winger is confident the team can gel together but admits the process may take longer while they continue to work hard on the pitch.
"There was obviously quite a lot of changes in and out," said Freeman.
"But with myself, I've only been here just under two weeks. It's definitely bonding as a team, but it might just take a little bit more time."
"The performances are second to none, it would be different if we were playing badly - that's a bit more worrying.
"I think with the way we're playing it feels like it's just a matter of time before we go on another little run to win a few more games.”
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