Look at this from Tuchel's perspective.
He just delivered major success. And club now wants to give him back in transfer window. I imagine he said to them that he wants a top striker.
So club look around and see Lewandowski, Haaland, Kane, Lukaku... Say what you want about Rom but he is top5 rated strikers in Europe...
Do people really think TT cares about things mentioned like no resale value, price etc... Considering history, what are the odds he'll be here in 2 years? So if other top strikers are not available for different reasons I think he'll be perfectly happy with Lukaku because he wants someone who will give him goals. People attack the board and say if we can't get Haaland don't sign anyone but that would actually be major 'fuck you' in Tuchel's face.
Tuchel wants top striker now and he don't care about 99% things mentioned on here. It's clubs job to deliver it to him.