Arsenal and any team that meets Real Madrid in the knockout stages next season could beat Real Madrid. It is not a guarantee that Real Madrid will win every season and progress smoothly without any obstacles, but failure also needs to be considered. I might be worried that the more top players in a team, especially in the attacking position, will make the team's performance not as good as expected, but that's just a worry.

Arsenal are of course still not yet established in terms of winning mentality even though in the last few seasons they have improved. Arteta has changed Arsenal's level of play to be more attractive than the previous coach, but Arsenal have not felt how happy he was in winning the title at the end of the season. There is always hope, but it is also always possible to fail.