Let's say Dembele is quite good. As good as Ings, or better at some things and perhaps a little inferior at others. But near enough the same quality.
Selling Ings for £15m and getting his 125k weekly wages off the books and signing Dembele for £3m on say, 80k a week, seems like decent business, no?
Maybe then in the Summer we go all out on a new striker, perhaps selling Watkins to help raise funds? I don't know. But maybe, just maybe, we're doing some smart business here.