In a very creative team he will flourish and score goals if he has his confidence, but in my view he always needed two quick wingers and a forward behind him to set him up. Yes he is a classic goal poacher who comes alive in the box, which I'm not saying isn't great... but if he didn't get decent service, what did he do? He never really dropped deep to get involved, never really made super creative runs outside the area, didn't beat people with the ball at his feet - in this was he was/is very one dimensional in that outside the box, or if he was shut down, he didn't contribute that much.
He also goes on pronounced 'hot and cold' streaks, independent of the team he is playing in - 2014/2015 he went for 5 months or so without scoring, he is on a similar bad run now.
Yes I'd want him back in the squad as we need a finisher. No I wouldn't break the bank to make it happen as I think that there are more well rounded players out there for the same money.