Marseille striker Loic Remy has completed an £8m move to QPR, with his France team-mate Yann M'Vila expected to follow him to Loftus Road in a £7m deal.
Remy has agreed a four-and-a-half year contract in a move the club have described as a "club record fee".
The pair will provide a huge boost for QPR, who currently occupy bottom place in the Premier League and at five point from safety, are in serious danger of relegation from the Premier League.
While the £15m outlay may seem extreme for a side that could be playing in the Championship next season, manager Harry Redknapp claims Remy had been valued at £20m and M'Vila £28m in recent seasons, meaning QPR are securing a bargain.
The R's boss has been eager to praise the involvement of QPR owner Tony Fernandes in securing the transfer for Remy.
"I'd given up to be honest. The chairman Tony Fernandes did it to be honest, not me," Redknapp said following his side's FA Cup victory over West Brom.
"I went over to Marseille last week and he (Remy) wasn't keen, I don't think. I did speak to him about a couple of players we were looking to bring in.
"He was excited by that and then the chairman worked ever so hard. He wouldn't give up on it and Remy decided he wanted to come.
"I watched him so many times when I was at Tottenham. The fee then was around about £20m. He's a good buy for us.
"He's quick, a French international, his movement is excellent and he has the potential to be a real star in the Premier League.
"Newcastle United wanted him and [their chief scout] Graham Carr doesn't make too many mistakes. Graham's got good judgement."
Newcastle are reportedly hugely frustrated at missing out on Remy who was seen as the ideal replacement for Demba Ba who departed for Chelsea.
Speaking about the move, Remy told QPR's website: “Harry played a big part in me coming here. I spoke to him and Tony Fernandes at length and they made it clear they wanted me here. They gave me the right motivation to join QPR.
“I want to develop my game here. This season the objective is to stay up but beyond that we have greater objectives.
“After seven years in France, this is the right time for me to pursue a new challenge in the Premier League – the best League in the world.
“I am confident I can adapt to the Premier League. My main characteristics have taken me to the level I am at today but I am keen to keep improving in the Premier League.”
As well as Remy, who will wear the number 18 shirt, Redknapp also expects QPR to sign Rennes midfielder M'Vila.
"I also liked M'Vila when I was at Tottenham," Redknapp said last night.
"He's 22, played against England a couple of years ago for France, and was fantastic.
"Arsenal and Spurs made offers for him. I promise you that. They (Rennes) turned down £28m from an English club for him a year ago.
"Spurs offered £15million for him in August. The deal looks okay.
"M'Vila's had a few problems off the field problems. If he behaves himself, and plays as we know he can, he'll do well."
Redknapp is still hopeful of signing Tottenham midfielder Jake Livermore on loan but says he is unlikely to renew his interest in West Brom duo Jonas Olsson and Peter Odemwingie.
Redknapp also confirmed he will allow striker Djibril Cisse to leave during the January transfer window.