It is good for Arsenal to be close to completing the Gabriel Jesus deal now. They have been the most serious team to sign him for a long time. It seems like it is not a big problem for Gabriel Jesus not to play in the Champions League next season. But they can do this together at the end of next season. Arsenal are aiming to build a solid team now. They are still going to play with many young players. As long as they bring the necessary players to the team they can do a good work.
If there are a lot of young players in the team, maybe Arsenal will not be able to perform very well next season. It takes time for the understanding between the players to be good. However, since Arsenal coach Mikel Arteta wants to rely on youngsters, I think Arsenal will become more stable and strong in the next few seasons.