I've no idea why he isn't playing at a higher level, he didn't exactly set the world on fire in his time in La Liga but his scoring average was pretty much a goal every two games in a pretty poor side which isn't bad by top flight standards. I am guessing he's been dropped as he hasn't scored...
His record at Almeria prior to the start of this season was 35 goals in 72 appearances, that included a season in La Liga. Last season he was absolute fire 28 goals in 38 games, he knows where the goal is. He's only started 10 games this season so 4 goals is keeping with his career average.