After the victory over Dinamo Zagreb it means they will have raised 1.2 million from the competition thus far besides being a step closer to topping the group assuming they collect the three points.
This is on top of the £2.94m the club is awarded for qualifying in the first place giving them a total of just over £4 million.
That doesn’t represent clear profit however, as the manager and players have bonuses for European qualifican and success written into their contract.
Should the Hammers go on to win the competition outright they would pick up £8.6 million or as runners up the reward would be £4.6 million.
Tonight’s match will kick off at 8pm and can be viewed on BT Sport. David Moyes will announce his team for the game an hour before ko.