While Ball makes me nervous, you're really banking on a window of time. You're trading for a good value PG for a critical period of 4 months early in the season. When Kyrie comes back, you will likely have all the reinforcements needed to handle the PG load regardless of minor injuries.
Of course you want Ball to stay reasonably healthy. It's not ideal in that sense, but the PG position can be better managed after mid-season.
Of course you want Ball to stay reasonably healthy. It's not ideal in that sense, but the PG position can be better managed after mid-season.