Currently, how much cap space do the Celtics have to sign a FA?

[Tr1boy]

Question for cap wizards. 

Lets say the Celts don't pick up Theis team option,  and ditch Ojeleye  deal.... how much spending money would the team have??

Also how much TPE does the team currently have (post Kanter trade)

I also read that the Hornets could trade their TPE?   do they have to?   

thanks