Sadly, most here are unappreciative of what rondo has done for this team. High praises when he's in beast mode and are easy to forget Rondos dominance come playoff time. Wanna see the kid's value, trade him for a few cents on the dollar, and have Celts being torched by rondo next year. Can Lawson outplay rondo? Good luck Lawson.
Sadly, while Rondo is a great player, most here are unappreciative of the fact that he really isn't irreplaceable.
Here's an interesting blurb I found on the Internets:
http://www.hoopsstats.com/basketball/fantasy/nba/boston-celtics/players/rajon-rondo/comparison/12/2/28/100
I think the major reason why people don't see Rondo as being replaceable (other than overvaluing our own guys) is because he has such a unique skill set. Its really hard to imagine someone else taking his place since there are very few players like him around.
Rondo is a facilitator first and foremost. The point guard position in this league has transformed into a major source of scoring with the likes of Chris Paul, Derek Rose, Tony Parker, Steph Curry, Irving, Westbrook being the premier pgs in the league right now.
Deron Williams and Steve Nash are closer to the middle ground in that they both can score and are excellent passers, but neither entirely hang their hat on being able to put the ball into other people's hands to create scoring.
Ricky Rubio has probably the most similar game to Rondo, centered around amazing passes and cutting to the basket, but with a limited short-long range jump shot. And they have similar defensive games, that is when Rondo commits to playing D.
Thats why I think that even when you look at that matchup of stats between Lawson and Rondo and it doesn't seem like overall you'd be giving up all that much by swapping the two, its still hard to imagine Rondo being replaced by him.