He's clearly not part of Clement's plans, that's why he's with the B team. I understand it's mutual, Lammers wants to leave, for whatever reasons he didn't settle in Scotland or at Rangers. It's best for everyone that he moves on. He might need to accept a drop in salary for that too happen, so a lot will depend on the player himself. I suspect this will drag on until the last minute as interested clubs wait to see if we blink and agree to cover some of his salary and we wait and see if the clubs who want him blink and agree to pay him closer to what he's on with us.
Whatever stats might say he's been a really poor signing for us. Not every player is capable of playing for Rangers, often that's not to do with footballing ability. Lammers falls into this category.