Good player, but is a very volatile person. Could be a steal, but if he causes problems like he did at PSG, could be another Diouf - has the skills, but attitude stinks.
Its not right that he joined for just 7 mln euros, as PSG bought him two seasons ago for 10 mln euros. If not his bad relationship with the manager, then PSG would not sell him for less than 12 mln.