He's an exciting talent for sure: he's very composed on the ball and he's a good finisher. He's also strong enough not to get outmuscled by more experienced players, yet he's not slow or lacking in technique. Certainly someone worth keeping an eye on.
His contract should not have been extended. He always gives his all, but he's just not good enough anymore, sadly. I'd love to see us sign a reliable back-up for Umtiti-Piqué and another rb.
Denis for me. Arda doesn't fit as a midfielder in a 4-3-3, he should only play on the wings imo. Rafinha is better on the wing too imo. Denis and Gomes are best in midfield, and since Denis has been better for us so far, I'd pick him.
Bellerín is too expensive to be a back-up, and I think that's all we need right now, as Sergi Roberto is doing well imo. I'd rather go for someone like Hysaj, who impressed me this summer.