Rodrygo's non-playing in the semi-final match made the rumors of Rodrygo's departure even bigger. But according to the local media I read that wasn't Xabi's reason. Xabi reasoned more on the technical side. But there were rumors that Rodrygo would leave after Mbappe arrived. Not only Arsenal there are clubs from SPL and even PSG are ready to get Rodrygo's services.
You should that most times, the coach won't come out outrightly to say the main reason why his been benching him. It was already clear to most of us that Rodrygo's days were up in the all white colours. Yes, he dropped form towards the ending of the season as I noticed and that has also affected him play wisely. How do you defend not playing an injury free player throughout the group stages. I'm not even sure his started any game for Alonso, the few times he played he came off as a substitute with few minutes left to play, I stand to be corrected on this. It very easy to notice when a player is no entirely in the plans of a coach.
I think it's left for him to actually choose the club where he will continue his football journey because the dude is full of talent and staying at Real Madrid and not playing is not the best option and choice for him so it's best he takes the move and leave the club now that he is still of value and very vibrant and most clubs would still love to bring him to their squad especially teams in the premier league where he can still get some good offers and playtime.