In this season Arsenal is doing amazing job, and we can expect improvement in coming weeks but can they keep this momentum, and we will be able to watch them as winner of the two titles because they are capable of having amazing stuff and new player's entry can bring more success with good and strong competition.
Arsenal have bigger opportunity to win European League tittle in this season with consistency performance in domestic league and lead to 16 round at Europe League as managed group standing. I can't remember with Arsenal achievement in European competition except lead to final round in Champion League but beaten by Barcelona.
If can continue with consistency performance, I believe with Arsenal opportunity in this season with Europe League become their first achievement in European tournament after longer time missing with any trophies yet. Next round in Europe League, Arsenal still waiting for until play off round matches result for drawing which one team opponent.