I would definitely like to see an upgrade in ability over Williams next season, whether that be Simon finally healthy, Lane, or someone through the draft, I don't know. Let's try to at least be realistic about it though. Maxwell is absolutely out of the question in any realistic trade scenario.
Even eliminating his signing bonus which Philly would eat, these are his numbers moving forward.
2016 - $8.5 million salary
2017 - $10 million salary w/$500k Roster Bonus
2018 - $9.75 million salary w/$250k Roster Bonus
2019 - $9.5 million salary w/$250k Roster Bonus
2020 - $10.5 million salary w/$250k Roster Bonus
He's going to milk ever cent of that until philly cuts him, because no team will take that contract for that player. I love Pete and John, but I'd call for heads to roll if hey blew that kind of cash on Maxwell. We have other more important needs to fill, and I'd sooner trust them to draft a replacement for Williams than bring in an expensive free agent.