Well it is difficult it seems to force Gordon's transfer to Manchester City because seeing from the current situation Manchester City is quite full of young players especially for midfield and winger so it will be very difficult for Gordon to be there unless Pep wants to make their core line up and reserve line up balanced.

Now at Manchester City the winger position has been filled by Grealish and his position has also become flexible because Foden and Doku can replace Grealish's position especially if you look at the actual pattern of play Doku and Gordon are not much different because they are winger who prioritize endurance although Doku is better in terms of speed and this is what will make it difficult for Gordon to be at Manchester City.
But on the other hand, this can still happen because as I said earlier, the roles of Doku and Foden can be flexible, but still he will eventually become a coating when he is at Manchester City.