On paper he does give the impression that he has enough technique to play in a possession team but the most important aspect is the mentality and if he is able to adopt possession game principles, that's not a given.Yes, that's a fair description of his career so far. I think his technical ability would indicate he would work in a possession-based system though.
Also, if the rumour are true the goal may not be to play a strong possession style, it's not as if ETH was Guardiola.