Agreement has been reached between Inter and Manchester United for Lukaku. There is a verbal agreement between the two clubs and now they are awaiting the documents that need to be signed in order to close the affair. If everything keeps going in the right direction, Lukaku could arrive in Italy in the coming hours (either tonight or tomorrow morning) to undergo his medical visits.
As far as the figures, 65 million will go to Manchester United as a fixed sum. The number could increase as there will be an additional amount that will be set as easily reachable bonuses.