The success of Arsenal in the UCL will likely hinge on their ability to balance their priorities between domestic and European competitions. It's common for teams to approach such critical ties with a sense of urgency. Fans will undoubtedly be eagerly awaiting the clash, and the coming weeks will be crucial for both Arsenal and Porto in terms of squad management and strategic planning for these vital encounters.
I think both of them will make very thorough preparations for the match in February, because the Champions League is always a priority for every team that is still there, although every team also does not forget the domestic matches they have every season. However, for the match in the Champions League, it will be more attention for the teams that will compete so that both of them will definitely make better preparations than now, even though they are sometimes tested through their respective domestic matches.
All teams certainly want maximum results in the bigger round of the Champions League and they are also starting to improve their performance to the addition of players this January. The Champions League is very different from the domestic league because every year there is always a new team or even a regular team that is a champion candidate which is always an enemy that is difficult to beat. So anyone who hopes to win against strong teams in this competition will of course try their best so that the results obtained are commensurate.
However, if they cannot achieve this, I think they should not be sad and continue to make improvements every season and we definitely want to see the revival of mediocre teams and not always be dominated by elite teams with top squads. Consistency in the domestic league can usually be a good reflection for the Champions League competition and they can do that as long as there is the will. Arsenal and Porto are not in much different situations, but Arsenal are in doubt when the results they have achieved so far have been quite disappointing in the domestic league.