I think it'd be more fun to combine both rosters and figure out the lineup.
My guess is 2014 Rondo beats out 2008 Rondo... My guess is nobody else from the 2014 roster makes the starting lineup. Someone figure out the minutes breakdown 
Here's my guess for how the minutes would break down:
PG - 2014 Rondo - 33MPG
SG - 2008 Ray - 36 MPG
SF - 2008 Pierce - 36 MPG
PF - 2008 KG - 33 MPG
C - 2008 Perk - 26 MPG
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PG - 2008 Rondo - 10MPG
SG - 2008 Tony Allen - 9MPG
SF/PF - 2008 Posey - 10 MPG
PF/C - 2014 Bass - 10MPG
PG/SG - 2014 Avery Bradley - 8MPG
SF/PF - 2014 Green - 7MPG
C/PF - 2014 Sully - 5 MPG
Inactive/D-League = Smart, Oly, House
Cut = Turner, Glen Davis, Leon Powe, Cassell, Scal, PJ Brown, Thornton, Wallace, Young, Zeller, etc
My guess is that someone like Bass has value, because he can hit the mid-range shots... you might see KG play center in some lineups. Thoughts?