Wow, I seriously must have forgotten or I didn't realise that Jackson was once under Emery. The last notable time I really took note of Emery in La Liga was when he was in charge of Sevilla. He was the coach that broke the Europa League record of winning it 3x in a row with Sevilla. It skipped my memory that he was even a Villarreal coach. Well it might be a good move, since he has already worked with Jackson before now.
I also forgot that too. 
Jackson's stats was pretty good when he being coached by Emery. He scored 12 from 26 games. This far better than when he arrived at Chelsea. No doubt Emery is pushing for his former player to join in his club. Hope he can reunite with Emery again like father and son.