I do have my doubts about Gyokeres too, but I simply don’t see any other option as good as him, aside Isak obvioisly who is probably a bit hard to reach.
But I can’t understand the thinking behind Sesko being a better option? Seriously, I’m not being negative, I just can’t understand it.
Yeah, he’s younger and has more room grow and adapt but he HAS to grow a lot because he simply isn’t a very impressive goalscorer atm at all. About 15ish goals in the BL in these last 2 seasons doesn’t really scream prolific at all.
And I don’t see some amazing technical quality and allround talent, that I saw with Isak at Sociedad for example, that will make you ignore his lack of goals and still make you hopeful about his developement.
He absolutely MIGHT turn into a top striker, no one can deny that, but there’s not many things that are making me super confident abut that atm really.
Now this is a strange one. By everything I saw from both it’s the opposite. Gyokeres actually gets much more involved in the game besides the goals, insane work rate, moves to the fanks and creates danger with his pace and dribbling, not to mention his pressing etc.
Not sure why are so negative about him fitting into our system. I think he would almost be perfect for us. Naturally likes to press a lot, Arteta will love that. He’ll move to the flanks and help our wingers, but also knows his place in the box and I think he’s one of the best finishers around atm and he’ll get his numbers.
A good point about a high number of penalties, but there are hardly any top strikers who don’t score a decent amount of pens. If you start stripping everyone off of pens everything looks different.
How many non penalty goals does Sesko have btw? 10-12? He makes Havertz look like a prolific goalscorer 
18 non penalty goals (if I catched correctly) is still very good for Gyokeres. Doesn’t sound as impressive as 30 goals, but if you take away some pens, and if you leave some (a minimal amount every top striker has) that’s still 20+ league goals only, in a season that’s still going. That’s still very good, combined with all other qualities he has.