Gordon - Definitely one of Green or Wallace has to go to make room for Gordon. Wallace and his contract will be difficult to move. So either trade Green or move him to the SG spot. Trade could be better to bring in a starting center. Gordon is really young but i believe with his iq, strength, motor, skills BS will eventually have no choice but to start or play him alot of mins
Randle - If he has developed a jump shot , i can see him temporarily play at the SF spot. If not we will have a trio of Sully,KO, Randle rotating upfront. Green can stay as the sf and AB stays as the SG (if a deal can be worked out). If we get a starting center, there is a pretty bad logjam at the pf/C spot and a move will have to be made. The lineup from last season might not regress but might not improve
Smart - Could play with rondo and be the teams sg. With both Smart and Rondo not considered natural shooters, alot of problems can result because of this. Teams can lay off on both, dare them to shoot, help more to cover everyone else. I like smart but if he hasn't improved his shot, he is eventually going to be injured often and frequently the way he plays (like dwade)
Vonleh - Unlike Randle could play more of the pf/c role. Has the length to be a part time C. PRovides the team excellent rebounding and decent rim protection skills. Good shooter and has some promising looking post moves. Feel for the game is mediocre but he could fill in alot of holes the team has
Saric - A complete SF. But there are concerns regarding his foot speed/defense (like KO) and if he will come to NA. Also he is a player that needs to ball in his hands alot and needs sometimes to grab a rebound and take up the ball himself. Not sure if Rondo can work with him (plus you also got a similar player in KO , who also likes to be the faciliator once in a while)
Imo Vonleh makes alot of sense in terms of filling team needs and drafting based on upside. However i don't think BS is going to enjoy coaching him due to his mediocre iq/feel for game/turnover prone tendencies. BS is a coach brought in to win ASAP more than develop players. He is not patient as we saw several times where one rookie mistake could mean your yanked from the floor.
Randle is a bad fit but knows how to play the game. He has polished post skills that are hard to find from young players these days. He was considered in the beginning of the year as one of the can't miss top 3 or 4 prospect of the draft.
Lastly as people know here i like Gordon alot. I like his character, work ethic, underrated skills, unlike Vonleh low turnover numbers, nice defensive, team 1st mentality. If he doesn't wow the celts in his private workouts by hitting jump shots, it will be understandable if he is passed on. But i think that's unlikely. Jeff Green is a horrible SF in that he shys away from contact, is a poor rebounder and provides very little rim protection. Don't remember the last time i saw him take a chage. If Sullinger and KO start next season bc the team cannot workout a deal or bring in a proper center, i can see Gordon helping them out alot on things they are not good at. Helping them rebound, protect the rim and get in tips ins out of nowhere (small but important tool to have). Rondo also will have someone he can lob balls to more, a skill he hasn't been able to utilize really since guys like KG, Wilcox have left the team.