Rice has definitely been POYT and that is not because I am biased.
On the topic of Saka, I would say if there is one thing that might prevent Arsenal from taking the next step to becoming a Real Madrid or prime Liverpool, I think it is our wingers. Saka is amazing, but at this point, he's a bit of a one-trick pony where he's dangerous when he cuts inside and slices the ball. I want to see him score in more different ways akin to Salah (but he's not as fast as Moh which is how he gets the majority of his goals). Martinelli also has some problems as well, he has the speed, work ethic, and trickery you want from a top-calibre winger, but his finishing skills are quite behind a lot of his other attributes. There's a chance he might not ever be a good finisher, but he has to improve to an average level if we want to take the next step.