I don't know if he's a long term solution for DM at Las Palmas, but he is not suitable there for their playing style.
For their short passing build up he doesn't seem like an ideal player to be a "press breaker" playing with his face towards the goal in the build up, his constitution doesn't allow him that, and altough he's solid technically, ofcourse he has no refined Busquets esque touch ( and intelligence) to provide secure possesion in dangerous area.
Roque Mesa is heavily missed for Las Palmas. He was ideal type of player for that role. I hope they'll search for a better solution so Lemos can play as a CB.