The ONLY reason to move him on is "IF" we stick with Conte or go with another manager that has us set up to play without the ball. But he is a woeful fit for a Spurs team that plays without the ball (I am aware that Samp didn't - re this clip/game and don't usually boss the possession stats but there is a difference between Serie A and Prem that can be seen in this clip, Lazio aren't pressing that aggressively, whereas this tends not to be the case in PL).
In a possession dominant team, he's absolutely fine, in fact, he's a perfect fit. We aren't a possession dominant team and haven't been since Poch left (Poch last season we didn't boss the possession stats).
I'm not Conte out but I can't wait to see Tottenham play with the ball again.