Most rentals aren't as good as Gray....I just looked at 2022, and there were two trades with better players (Soto and Castillo deals).....I don't know if we know what Gray would bring back for sure. Less than Castillo for sure, but more than most. I mean, if they can't get a 45 value prospect (or better) they need to keep him and offer the QO, assuming he doesn't fall on his face the rest of the year.