JR Giddens is two years older and can't play the point. Giddens can't shoot either.
Myabe Giddens might be worth something with regular minutes, as sort of a Bruce Bowen type. But that will never happen under Rivers.
You realize that they spent months trying to trade Giddens, and there were no takers. I expect him to be out of the league when his three years are up.
How do you know that won't happen under Rivers? There are plenty of guys who didn't see the floor their rookie year, but as they learned the system and matured, became key players.
Like who?
Powe comes to mind, as he was completely lost as a rookie (and part of his second year), and didn't see the floor until they were in all-out tank mode. Perkins (although he was in his second year when Doc took over) made a huge jump in minutes in his second year with under Doc.
I know there were injuries involved, but Delonte went from being a bit player most of his rookie year, who was at the end of the bench for a while, to a starter his second year.
Ryan Gomes didn't start off his Celtics carreer well, and looked completely lost, but then found his way to the court after a prolonged stint on the bench, and was a completely different player.
They are not exactly the same as Giddens, but there were also very different situations when most of them were starting out, which allowed them to play earlier, due to the lack of competition on the roster.
In general, Doc has shown that he will not play young guys when they are struggling with the system, unless he absolutely has to. But he has also shown that is not the kiss of death, and even though some might pick it up slower, they can still get there.