In his last 3 seasons he's played over 70 games in each, which is pretty impressive considering he only managed 17 in 13-14.
His game changed a lot last season, becoming a lot more perimeter orientated - his 2PA per game was his lowest since his rookie year, and he was knocking down almost two 3's a game at ~35%.
However, his rebounding leaves a lot to be desired, especially for someone who is 7' and 280lbs.
So in regard to his value, it should be somewhat high, as he has proven himself throughout his career to be a very capable offensive player. Whether or not Brooklyn is able to find a suitor, however, is a very different question.
Would Milwaukee potentially be interested? Something like:
Henson, Teletovic and #17
for
Lopez and #27
Not sure how well Lopez would fit, but he can space the floor, which would be very handy next to the Greek Freak. Henson is solid, but hasn't improved too much since his rookie year, and Teletovic is alright, but nothing impressive.
Not sure if Brooklyn would take this, but I'm not sure what they could get for Brook.