I've seen some figures thrown out with considerable variance, all the way from projecting us to have as much as $100 million of 2019 cap space to as low as "just" $50 million. Since Wood's release has been officially processed, it's a lot easier to arrive at a more exact figure, even (literally) accounting for some fluidity to this figure, especially in the next nine months.
Remaining 2018 Cap Space (able to be rolled over, according to Spotrac): $15,992,915
Current 2019 Cap S