Saka has already racked up more than 300 appearances for the club and is among the youngest players in Premier League history to reach 200 starts.
However, as he leads Arsenal to their first title in over two decades, there is no doubt that his form has dropped massively.
The England star has six league goals in 27 appearances, with nine goal contributions in total compared to the 25 he managed in each of the previous two campaigns.
Speaking to BOYLE Sports, who offer the latest Champions League odds, Gallas spoke on how needs to change his game if he is to get back his best.
“Saka is 24 now. What does he have to do to get back to his best? Maybe he has to change his football.
“Every player knows him in the Premier League. They have all played against him. They know his movement. He has to change something and bring something new into his game to surprise his opponents.
“For the type of player Saka is, we are always looking at what they produce. How many goals has he scored? How many assists did he create? Then we will know if he has improved or not to compare with the previous seasons.
“He is still young at 24 and he started very young but it doesn’t matter. He has to bring something new to his game. A big club has a big squad so it’s about rotation as well.”
Saka will miss Arsenal’s clash against Sporting Lisbon but should be back this weekend to face Bournemouth where he and his side can extend their lead at the top of the table.