The deal had been set for the end of the season, but will now be brought forward with a fee of around £20million, plus £5m in add ons, and is likely to be paid in instalments.
Once Benrahma’s deal is made permanent, West Ham will free up a domestic loan space for Lingard, who is keen to join David Moyes’ in-form side.
West Ham are set to convert Said Benrahma’s loan from Brentford into a permanent transfer
Both domestic loan slots are currently taken, with Watford defender Craig Dawson and Benrahma currently blocking a temporary move for Lingard.
The Red Devils have told Lingard – who only has three appearances this season in all competitions and none in the Premier League – that he can leave.
Moyes, who knows the 24-cap England midfielder from his time at Old Trafford, clearly believes he can rejuvenate the 28-year-old’s form.
The move will free up a domestic loan slot for Manchester United midfielder Jesse Lingard