Statistically DCL and Tammy is very close. Currently we don't have CF close to their traits, so it made sense to get a similar CF. Assuming its likely Laca will stay and Nketiah sold, getting Tammy on reasonable price is a good business, different but useful traits to our current CFs, proven goalscorer in EPL, and allow squad depth to loan Balogun and Martinelli to get starts that will develop them more than being back up at Arsenal. Auba + Laca + Tammy, sends Balogun + Martinelli on loan. 2022 Laca goes, while Balogun + Martinelli has a full season 1st team starts so more likely ready to challenge Auba and Tammy.