I feel like we're gonna have to rely on him sooner rather than later. Not as a pivot, but for the CM position. Xavi is the only true central midfielder we have that excels at controlling the game and circulating the ball but that comes at the price of only playing well when rested and leaving us defensively screwed. Samper would give us another option and if we can accelerate his development we'll have one major problem area covered.
I believe he's ready because the role that'd be required of him doesn't require him to deliver anything difficult (a consistent goalscoring tally or defending against top class players without making errors). It's just a matter of circulating the ball the way he's been taught to do since he was 6 and keep the team connected.