Not really sure what the plan is for him. Gakpo is making that CF position his own in rotation with Jota who can also play on the left. Diaz and Salah first choices. Didn't Darwin play on the right side of a forward pairing at Benfica? Maybe his long term future might be on the right, but it seems a long shot. Realistically next season he's third choice on the left and third choice through the middle.
I don't doubt his abilities as a footballer. Any team who plays with a recognised striker would love to have him, and his return of 15 goals was impressive in a struggling side. However, it's hard not to feel like this was a mess of a signing. Maybe things will improve when he's got a better grasp of the language, with a settled midfield and with time and I hope that does happen. However, a year on it does seem crazy that we spent so much on a player, accepting that we'd need to significantly alter his game (and he's 24 soon), then 6 months later signing someone else to play a different role in his position.
I know the obvious answer is that we'd rotate, but surely when we dropped £65m on him we weren't planning to just save him for teams that leave space. Also, switching Gakpo with Nunez changes the dynamic pretty significantly.