I'm sure Conte will find him a place. Just see how Conte has changed his formation since he arrived to Juventus.
At first was a 442, but Vidal was so good he had to include him and changed to a 433.
Then he realizes Bonucci was helpful to liberate rivals pressure upon Pirlo so he changed from a 433 to a 352.
Last season with Pogba good perfomances coming from the bench made him change again for a 361 in order to make Pogba play.
Now, if Lamela comes and shows his quality I'm sure Conte will find him a place. Maybe in a 433 again or a 343?