Whilst it's clear to see that Soldado didn't have a successful season, I think he deserves more time.
I don't think he should be judged on the season we've just had - he was the 2nd (or sometimes 3rd) choice striker under Sherwood, so whilst he got games under his belt, I don't think it was ever looking like it was set up for him.
I think it'll be interesting to see him in a genuinely set up attacking side: AVB's tactics were ball-greedy, Sherwood's were sort of naive over pure attacking, so if Pochettino uses strikers & forwards like he has at Southampton then we should well see some interesting games with Soldado potentially in goal scoring positions.
If we're being honest, he's never looked like a 60 yard run and finish type of player, nor as a shoot from distance type, which are both more 'suited' to the PL, but with a full pre-season and Poch coaching, we might see something special from him.
If he does decide to leave, I wouldn't hold it against him - he needs to be enjoying his football on a regular and prolific basis in order for him to get best from his career whilst approaching 30 - but I think I would want to see him show a desire to stick at it and force Poch to pick him