I don't know, have you seen the list of centers that are free agents?
http://hoopshype.com/free_agency/centers_2015.htm
It might allow DA to go BPA.
Yes, I'm aware of who will be a FA this summer. The list appears deep but it's misleading because a lot of those players will definitely be re-signing with their current teams or are not good fits with the Celtics.
Marc Gasol - Staying in Memphis or going to a contender.
Brook Lopez - Exercising his player option because his injury has lowered his value. Better to regroup for the FA market next year.
Roy Hibbert - Indiana will do what it takes to re-sign him.
DeAndre Jordan - Clippers will re-sign him.
Al Jefferson - Charlotte will try to re-sign him but probably won't go overboard considering his age and how bad they're playing this year. Can't say I'd be excited to be reunited with him at this stage of his career.
Nikola Vucevic - Definitely re-signing with Orlando.
Omer Asik - Hornets will re-sign, possible to steal but will have to overpay.
Robin Lopez - Definitely re-signing with Portland.
Enes Kanter - Possible to sign if we offer the most money, but doesn't help us on defense.
Brandan Wright - We already got him! Not really a Center.
Tyson Chandler - Too old to fit with our team.