I don't believe this to be true. Yes we could have got one more season out of him but nothing would have changed and it would have still been lukaku or nothing, except this time he knows he is off 100% (similar to this summer) so we don't get the best out of him yet again because why would he? He stopped playing in March this year probably to preserve himself
We swapped one player who was the focal point of the team for 4 years and in return got a new spine that is 24 or under. Pickford already saved 2 points this season, Keane could be a 10 year defender for us, klassen has all the ability once he finds his feet to do some great things ala ajax and sandro is a 21 year old striker who was apparently coveted by athletico.
The whole team dynamic has changed (not sure what to yet tbh) we have become a team again, we are signing team players to work together and not just give it to lukaku 38 games a season. If 3 of the 4 players who were brought in on the back of selling lukaku form the spine of our team for years to come then that is fantastic business for us.