PP is the only one I would retire out this crowd, no Ray, no KG and no RR.
right now, this is where i am. i have different reasons for each player, but rondo does not qualify in my mind. if he had remained a celtic for more years and kept up the level of production (which he wasnt), then i would consider agreeing with the retirement of his jersey number.
right now, i vote for him to join the hall of very good celtics. which means uniform #9 is alive and kicking and can be used by someone else.
p.s. on maxwell et al, just because a few others had their number retired when it shouldnt have been is not a valid reason to retire more numbers for poor reasons. the past is past, this is not.