Is anybody genuinely GENUINELY surprised? Said i wasnt gonna get into this but yeah. Wenger must know deep down that if and when the youngsters from Barca come good, they'll want them back. Part and parcel of the industry.
Dont actually blame Bellerin. You dont just turn down Barca when they come calling. Even our beloved captain at the time couldn't, and he gave it all for us. Bellerins a joker in comparison, still way in his infancy. IMO not ready for Barca just yet.
Let him go and make some bucks. Re-invest and crack on.