The Serie A giants are interested in recruiting United’s €75million striker, but United are holding firm on their €80m valuation.
Inter boss Antonio Conte is understood to be interested in signing Lukaku, who on Sunday left for United’s pre-season tour of Australia, and the player is keen to play for the Italian.
Though Lukaku failed to live up to the heights of his first campaign at United, he is still highly sought after given his impressive 42-goal tally in two seasons at Old Trafford.
‘The transfer market is a work in progress,’ said Marotta. ‘We are working hard to get the best squad possible for the new season. We are ambitious and want the best team possible.
‘We also must find ways to respect all financial perimeters too. We cannot rush things because that can lead to mistakes.
‘We have clear ideas but we need to be patient. We have important goals and transfer targets in mind.’