For me I would move him for a guy who can both help us win now and be a foundational piece for the future. Some on here might be better for the future then winning now, but they would still be helpful. Some I also think would help us win now more but would not be as great for the future because of age.This is a good list to consider.
Straight up I would realistically consider moving Rondo for each of the following:
Paul George yes
Anthony Davis yes
...and maybe a top 3 pick most years.
Why I would consider the NOs and this is based on Rondo pre-injury.
Wade is a much better win now player. He simply looks like a number one again and him along with Pierce, Green, KG, etc. would make us very dangerous. He would fit perfectly because he is dynamite with the ball, but has also improved a great deal off the ball (and its not like he was ever bad it). I for one was wrong about his decline and impending demise.
Carmelo is basically the same reasons as Wade. He is a number one go to guy that can score at will. He can go H2H with anyone. Can also play with and off the ball very well.
Deron Williams has not looked good this season based on his previous level of play. How much is due to his ankle injuries? I would consider Williams b/c he brings more of a balance of scoring and creating for others.
I really like Love's fit with our front line. His rebounding would be amazing but his passing inside would be excellent with KG. I could see us moving the ball like C-Web's Kings. He is also someone that I think is a foundational player.
Westbrook intrigues me because he is so explosive and would be an interesting fit with the style of play we currently have. I also would love to see him in our locker room. OKC doesn't have the same veteran presence we do. I think our organization could be better at helping him harness his ability.
Last Parker was the hardest one. It's more win now. I see how he looks like a MVP with the Spurs and believe it could translate flawlessly to this team.
I am saying I would strongly consider a straight up swap, but that it's no brainer that I would.