I highly doubt we could get Mayo for Haywood. They aren't looking to dump talent for space.
Here's why I think we actually could make a legit play for either Mayo or a Bayless.
The Bucks have new ownership that is aggressive and does not think in the small market paradigm. They have a head coach in Kidd who is familiar with a lot of players who are free agents and has their respect.
They are also set to sign Khris Middleton to an extension as soon as Free Agency opens. Its going to be for a high number, somewhere between 10-14 million per year.
They're not going to want to stop there. They're supposedly targeting Brooke Lopez and DeAndre Jordan in FA. But after re-signing Middleton, they'll need to move out another 8-10 million in salary to have room to make a MAX offer for Lopez or Jordan.
Look at their PG/SG/SF group: MCW, Ennis, Bayless, Mayo, Middleton, Parker, Dudley, Giannis even. That's pretty crowded and pretty versatile
So I think that one of Mayo or Bayless is gettable and the Haywood contract would be perfect for Milwaukee because it could either create pure salary cap space that they could use to sign a MAX player or be used in a S&T to make salaries match for a MAX.
Mayo and Bayless both seem to fit what we're looking for in our quest to add quality depth. Both 26-27. Both guys who can score well and are decent at making plays for each other.
Not saying it's going to happen, but I think there is reason for the Cavs to engage the Bucks in it.
Edit: Another wrinkle to this. I failed to account for both the players they took on for Ilyasova are on non guaranteed contacts and will likely be waived. That will push them to 23 million in cap space before the Middleton extension. If they can convince Middleton to not sign an offer sheet with another team, his cap hold is just 2.7 million, allowing the Bucks plenty of space to try and sign Lopez or Jordan first at the max and then do a new deal for Middleton with his bird rights. Still think the glut of PGs/Wings that they have could lead to either Mayo or Bayless being available