Klaus
I have to disagree. Sesko's trajectory is very upward, and if you think he would not be able to score goals at Arsenal, it's conjecture. You are so sure that Gyokeres is the better choice, but that does not mean Sesko is a bad decision. Spending 70-80 million on a big, strong, technically proficient striker hardly signals an 'unserious' move.
We all know Sterling was a mistake, but thankfully Chelsea were still paying the vast majority of his wages. It was a gamble that didn't work.
I actually agree with Dom, signing another winger to compete with Martinelli is also a big priority. We need to be able to get some of the focus off of Saka, and that will free both of them up to do more.