Losing him would be a big fuck up by the board. They cost of players is rising, the amount we got Raheem, Sane, Jesus etc for is nothing to what they are worth in today's market.
Any problems Pep might have him with he needs to correct, not buying attitude or work rate (he works hard in games), I think he doesn't like his skill set in particular situations. He needs to find a solution to utilize his strengths more often, I think his goal scoring has particularly been under-utilized he is a phenomenal finisher; maybe stick Jesus on the wings and play Sane as a striker.