Also based on his form recently, why make a special effort to keep him? Teams have him worked out. He gets the ball, he runs. Once they get him to ground he looked to be pretty easy to turn over in the past few weeks, gives away a lot of penalties. The reason he looked so effective early on was noone stopped him, he was the main attacking weapon, running the ball from everywhere and relying on not being tackled. Many times, once he was taken out of the game the Rebels went backwards.
A younger, Wallaby eligible player in Naisarani is, in my opinion, a better option.
Plus it sets a dangerous precedent if RA make yet another concession for the Rebels in allowing them to sign an OS player for longer. Definitely won't be viewed favourably by the other states.