Iím not selling him unless the offer is ridiculous (i.e. more than Leipzig can afford).
Just look at what Silva did with Richarlison early last season. I think Lookman has that sort of potential given the opportunity to play in a similar system.
It would be another sucker move to sell and attempt to replace him for double the cost with Zaha, Lozano, or Richarlison. Work with what you have.
(And he wonít kick up a fuss if heís playing football regularly here.)