To be honest, I would be the one who wouldn't bite on that one.
* Crowder is far better right now than Parker, and IMHO has at least as much upside
* Smart, Thomas and Bradley IMHO are all much better players than Michael Carter-Williams
I do like Monroe a lot though, and given his circumstances (young, good value long term deal) I'd be willing to give up a pretty decent amount to get him.
I do think we could get Monroe without having to give up the Brooklyn 2016 pick though. I'd offer Sully (solid fit next to Henson), Lee (cap relief and salary filler), Young (sweetener), the 2018 Brooklyn pick and the 2016 Mavericks pick.
I think that's a pretty fair deal for both teams. We get to add Monroe (would upgrade our team in a MASSIVE way) and keep the 2016 Brooklyn pick. The Bucks get a pretty nice return in that they get a replacement for Monroe (Sully), about $12m in cap relief next year, a young prospect with perceived upside (Young) and two picks with legit value.
I think Sully actually fits their team quite well, as it allows them to develop their front line of the future (Parker/Giannis/Henson) and bring Sully off the bench as a very productive 6th man...or they can go with Giannis/Sully/Henson (which is a pretty nice lineup) and bring Parker off the bench. Gives them quite a bit of flexibility, and a very talented young core.