I find it hard to believe that Rodrygo would leave Real Madrid the fees they're quoting would be too much for buyer they'll need to reduce it to around 70 or €75m if they really want to sell him this season. Anyways Xabi Alonso would know the importance of keeping Rodrygo probably when it's the middle of the year and they need back up players due to fatigue. Alonso should just give him a trial in the pre-season and if the doesn't impress then he can be loaned or sold before the league starts.
Someone has to go at Real, the team is overcrowded and Rodrygo is not a player you can leave on the bench as a substitute. Mbappe and Vini are both wingers and then they have 4-5 more players who could play in that position.
I'm sure there will be enough clubs that would buy Rodrygo for 100m, I'm not really worried about that.
It's clear he won't be able to stay at Real Madrid much longer; such a valuable player would play much better on another team. He fell into depression during his time at Real Madrid, and no one expects anything from him anymore. He's not bothered by being on the team's transfer list, and I'm sure he'd benefit from joining a team where he'll get a chance to play.
He'll be a huge financial asset for the club; 90 million is a huge sum. Perhaps PSG might want to acquire him; he's a player of the caliber many teams would want. The only problem is his high asking price