After sanctioning the sale of Maury Zarate and with Diafra Sakho and Andy Carroll both out injured Slaven Bilic has been keen to bring in another forward.
It appears Emenike is that man with Jack Sullivan, the teenage son of Hammers co-owner David, confirming he is to have a medical today.
Dubai-based Al Ain, where he had been on loan, no longer have Emenike registered as one of their three foreign players.
Race against time for Bilic
But Bilic faces a race against time to get the medical done, deal agreed and all the paperwork signed, sealed and delivered to the FA by the Friday lunchtime deadline if he is to play at Anfield.
The FA's rules on player registrations for the FA Cup state that the player qualification deadline for The FA Cup fourth round proper is 12 noon on Friday January 29, irrespective of when matches are played.
Bilic tasked with attacking the cup
West Ham have enjoyed a brilliant season so far and it could have been even better had it not been for a glut of injuries to seven key first team players over the last three months.
The club's owners have tasked Bilic with attacking the cup this season and so the former Croatia manager will want the pacy and powerful Emenike on board for their trip up north.
The 28-year-old could also be a trump card as he will be something of an unknown quantity for the hosts and their defenders.
If he is registered in time he will likely have to make do with a place on the bench given the fine form of Enner Valencia who has scored a brace in two of West Ham's last three games.
Emenike has been playing on loan at Dubai-based Al Ain, who no longer have the Nigerian registered as one of their three foreign players.