We were on a developmental timeline as a team & that was disrupted/delayed when Exum was injured, so now we need to adapt/adjust accordingly (which is exactly why you stockpile future assets like we have). Exum's injury has put us at a crossroad as his development was/is going to play a large factor in how successful the team is over the next two years, which is what will likely determine whether Hayward re-signs (which I believe is unlikely to happen if we're not a 50+ win team & top 4/5 seed by then). We need to commit to (attempting to) retaining Hayward by committing to (attempting to) winning now (& next year) by acquiring a starting caliber PG, but if we're not going to do that, we need to commit to the future by trading Hayward for maximum value now.
Being complacent & doing neither of those things is (imo) the worst thing that we could do as we will unlikely be able to replace him thru FA or the draft, & while losing Hayward for nothing likely wouldn't prevent us from becoming playoff regulars, it would likely prevent us from becoming legitimate championship contenders. Trading for a starting caliber PG (even if it takes a slight overpay in order to do so) is a necessity (imo) as last year's 19-10 finish (as well as our defensive statistics) showed that this core group of players has the potential to consistently compete for championships (given an adequate starting PG & depth) over the next 5-10 years. We need to see this rebuild all the way thru as we appear to be on the verge of something special & it would be a shame to allow an unfortunate injury prevent that from happening.