If I understand correctly, we have already used by most of our space. I'll be happy if the team can still use the money, but I think we have less money left than the MLE. We may end up signing a backup C, but could have potentially done that with the MLE too.
As for Holmes, I made two distinct points; his contract as a trade chip, that you didn't comment on, and his value on the current roster.
I agree that he was not in the plans any more. Trading him likely helps him, so good on Monte for doing that. From a team's perspective though, we are going into the season with Domas, an untested Neemias, and an undersized Lyles. Domas was superman last year, playing through a myriad of injuries. While I give him tons of credit for that, most good teams go with a reliable backup, and a third center who can contribute when needed. We aren't. Lyles played well last year, but Holmes was asked to start (and played well), when Domas was out. We also had Len.
Let's see if Monte brings someone in. Unless Neemias is ready, that position looks thin to me, and we traded away a reliable backup, with potential to bring in a useful piece, for money.
If Monte had sold a SRP for "cash considerations", the fan base would have been up in arms. How is this different? It's just more egregious, since we sold our FRP.