I think they will do well from that trade, too, but way more long term than short.
By trading Kiermaier, and freeing up 30-40% of their budget, they will have "won" a trade of him, too.
They spend their money well. Give them $13M x 2 years, and they will find valuable players worth way more than what Kiermaier is worth. cots estimates the Ray's player budget at about $34M, for 2021.They will likely sign a few minor free agents, but don't be surprised if the total player budget isn't much higher than 4 times what Kiermaier makes.
I know you can see this.