The reason Lukaku worked so well is that when we got him he was...
1. very young
2. history of scoring
3. not yet so huge that he would only go to the Big 4 clubs.
I think we should be doing this again. I don't want old Arsenal players or strikers whose best season was 3 years ago at a high price with a short future.
Thus, I nominate Dembele from Celtic. 39 goals in 62 matches at Celtic. Was the only one on Celtic who scored against PSG. Get him, put him on a 4-year contract and ride that horse.