near as I can tell:
Damian Lillard $31,626,953
CJ McCollum $29,354,152
Jusuf Nurkić $12,000,000
Zach Collins $5,406,255
Anfernee Simons $2,252,040
Nassir Little $2,210,640
Mario Hezonja $1,882,867
(player option - assume he opts in)
Gary Trent $1,663,861
Andrew Nicholson $2,844,429
Anderson Varejão $1,913,345
Rodney Hood $6,003,900 (player option, assumes he opts in)
about 97M with a 115M salary cap; 139M tax line; 145M apron
2020 1st round pick $3,300,000 (estimate)
so, 100M with pick
Trevor Ariza $12,800,000 with only 1.8M guaranteed
so then, about 113M with Ariza and 102M if Ariza is waived
free agents:
Hassan Whiteside ($34,800,00 cap-hold)
Carmelo Anthony ($1,707,576 cap-hold)
Wenyen Gabriel ($1,922,425 cap-hold)
if Blazers do not renounce Melo, Ariza & Whiteside, they are over the apron and can only use the tax-MLE (not 100% positive)
if Portland keeps Ariza and re-signs Whiteside for 10M, they are at 123M leaving 16M in margin to tax line and 21M margin to apron. And sice they are below the apron, they could use the full-MLE of 9.2M. And if my math is right, they'd be at 10 player with the draft pick; 11 players with Ariza and 12 with Whiteside; 13 with Gabriel. So then, what's left is the MLE and Melo. And theoretically the 3.6M BAE (be hard-capped if used)
I Blazers can keep Melo for the non-bird or BAE, they'd be able to get a fairly decent player for the MLE
(and again, the disclaimer I'm not a CBA guru)