Their team has peaked and won't get better. Lillard is beloved in Portland, so I don't think they trade him, but McCollum has a ton of value and they can use him to shed more long term salary and get out from tax hell (and still be able to retain Nurkic).
So the teams that make the most sense to me are the Lakers (trade centered around Ingram and cap space), Sixers (Fultz, Covington, Bayless as main pieces), and Wolves (Wiggins and a couple of 1st's plus ability to take on at least Turner). Cavs probably don't have enough even with BKN and their ability to take all of the Blazers bad contracts (Turner, Harkless, Leonard) as they would have to give back at least 1 bad contract. Spurs don't have enough young pieces though he would be a great fit there. He would be a good fit in NY, but again they don't have enough salary, though Frank N and their 1st this year is a good talent start. Any one else make any realistic sense.