It seems insane since he'd be forced to defend so much and the style is all wrong, but I'd like to see him loaned to Burnley since they play 2 wingers and have literally 2 wingers in McNeil and Gudmunsson (who has had serious injury issues) right now and are considering bringing back a 34 year old Lennon. He'd learn some defensive work, which we will need him to develop for big games if we assume Sancho and Bruno are playing out left and as a 10 in a 4-2-3-1 if he can blossom and get lots of minutes at RW here, and at the very least be their main non-striker attacker off the bench.
The other Prem teams have too much depth out wide now that Norwich have signed 2 out and wingers. Maybe Southampton, since they're short of quality out wide (Armstrong, Djenepo, Walcott since Tella is going to battle Armstrong as a 2nd striker) though I'd be worried about Hassenhuttl using him only as a sub if he doesn't press well enough, or Newcastle if they don't sign another #8 and have to play Fraser or Almiron next to Willock in the 4-3-3 they want to play, though it would worry me they'll just stick one out wide and one of the Longstaffs or Shelvey will play there. Brentford, I can't say I a ton about, but they appear to be going with a 4-3-3 and not the 3 at the back they ended the season on, so if we felt good about that it could be a good fit.
More likely, I'd guess he goes to Ligue 1 or La Liga, but if he stays in the Prem and we want him to adapt to English, those seem like the most promising playing time options.