His link up play was good whenever I saw him for dortmund. I don't think it will take a couple of years under Pep for him to become a complete striker, I think he already is a complete striker, and just needs to get used to the team a bit
He could realistically have had five goals today (the two he scored, plus the two header misses and the slide at the back post when Kev crossed it) and possibly an assist when he did some good link up play and slipped Ilkay in who should have got his shot off. You wonder how many times he will be getting multiple goals in games this season. Strap yourselves in because this is going to be one hell of a ride, and a very joyous one at that