Nigerian born quartet Eberechi Eze, Bright Osayi, Olamide Shodipo and Aramide Oteh will work with new coach Mark Warburton in the 2019/20 English Championship season.
QPR unveiled the former Brentford, Glasgow Rangers and Nottingham Forest coach who takes over from Steve McLaren on Wednesday.
All the four players must do more to convince the new man.
Eze has been a regular at the club and striker Osayi was one of the club’s key players.
Shodipo made just four appearances for QPR last term.
Youngster Oteh is yet to consolidate his position in the first team. He was sent on loan to Walsall.
Warburton’s appointment was confirmed by Director of Football Les Ferdinand said: “This is a fantastic appointment.
“We spoke with a number of excellent candidates for the position, and Mark ticked all the boxes for us.
“He loves working with younger players and developing them, and has a great understanding of the game.
“Mark is determined to be a success and we will be giving him our full support to achieve that.”
QPR finished 19th in the 2018/19 English Championship season.
Upon his appointment at Loftus Road, Warburton told www.qpr.co.uk: “I am delighted and privileged to be managing this club.
“When I spoke to QPR they were very clear. They have a solid plan and know what they want. They have a long-term outlook and that appealed to me immediately.
“I am excited about the challenge that lies ahead.”
“I like players being brave in possession, understanding the first thought is to play forward and be positive.
“You have to be fit as well. Work ethic, desire, hunger, passion – all those clichés are so important for us.
“Get that right and fingers crossed we will move in the right direction.”