Bukayo Saka is an important player for Arsenal, losing him for a few months is certainly a big blow for Arsenal, and many fans miss Saka. because he is a very good player and many are sad about his injury. Playing Bukayo Saka at this time is not the right choice, usually players who have just recovered from injury need time and process to be able to return to the Line up because the risk of injury again is very open.
So it's better if he plays it gradually starting from the bench. However, it seems that Arteta understands this situation, he certainly doesn't want to take too big a risk by playing Bukayo Saka too quickly, especially in the next two matches Arsenal will face easy opponents so that even without Bukayo Saka Arsenal can win the match. Besides that, I am also sure that Mikel Arteta will give his best to Bukayo Saka to use his injury recovery period as an opportunity to return to being a better person and his performance will improve again soon, of course this requires a moment to play Bukayo Saka.
Saka is just another Harry Kane of Tottenham that never won any Premier League and yet top the highest goal scorer in his time with the club, Kane is even better since he was able to have highest goal scorer in the club, Saka didn't appear in the top 10 and I'm sure he would likely not unless he want to stay in the club for the rest of his life without any meaningful trophy in his profile, sometimes I feel he deserves better not by force to prove nothing over a club that has nothing to lose.
Arsenal aren't winning the league this season, they are not unless Liverpool players all got out of their sight which is not happening. He can only come back to win the league next season, that's if they try enough or if Manchester City isn't back to their form. This is even the best time for them to win the league considering the amount of efforts they put in the previous seasons but it seems their efforts is relative to who is on top of the table, the effor when Manchester City was at the top of the league was way better than what they are playing right now.