The two-time England international has only spent roughly a third of the past 18 months with the Red Devils since his January 2013 switch, struggling to make any impact.
Zaha was immediately loaned back to Palace upon completing his £15m transfer to Old Trafford, and by the time he returned Sir Alex Ferguson has moved on.
His replacement, David Moyes, appeared to be against using the young winger in his set-up, handing him limited opportunities before sanctioning a move to Cardiff for latter half of last season.
Louis van Gaal is understood to have assessed him in recent week and although he’s been relatively impressed, the Dutchman has reached the verdict that he has little chance of making it into his 3-4-1-2 formation.
QPR have since moved, and look set to beat interest from a host of Premier League clubs.
Zaha is thought to be open to a return to London, with the disruption at his old club Palace seemingly ruling them out, while Harry Redknapp is desperate to get in attacking talent for his side’s first season back in the back big time.