The other option to Davis or in addition to signing Davis would be to sign Robin Lopez
Robin Lopez - 6-7 million a season. A little bit of an overpayment but he can defend many centers in the nba. Not great on the offensive end. But can run , rebound and alter shots (utilizing his enormous 7'6 wingspan)
Thats not an overpayment on Lopez. He is worth more and will make more.
I think R.Lopez is worth $10-12 million a season. With the cap going up, it wouldn't be surprising to see him get anywhere from $16-19 million a season.