I've been expecting this transfer since January. Only, I thought Costa was surely a goner this summer, and I'm less convinced about that.
I think Lukaku gets some unfair criticism, it feels like he's been around for ages, but he's still only 24. Personally, I think he's one of the best under-25 strikers in football. He's not hit his ceiling yet, his prime is still a good 3-4 years away.
Sure, I think it would be easier to win now with the likes of Lewandowski and players of his class, but we can't get them. And, 5 years from now, I'd totally rather have Lukaku.
I like the idea of a player wanting to come here. It will be less likely that they will throw a strop in January because they want to move on.
For me, one of the great things about this season, compared to the last, wasn't just the results. It was how much I liked the team. If Lukaku WANTS to be here, I'm all for it.