Think this is a really good signing which I hate to say. He is a really good play who grew as he got used to the Premier League. Not huge huge money either all things considered...
Very talented player, however he's very inconsistent. Most of his goals for Newcastle came at home and he was often found wanting in the away games. Was pretty telling that he was dropped for quite a few of the crunch games towards the end of the season. Plays when he wants to play. He'd be similar to Coutinho and Firmino in that respect.