with dybala for me it was always about his availability, not his quality. he is a very good player who makes things happen in the attacking 3rd. in the right setup he wins at least a dozen matches for the team, either with assists or goals. so for me it would be down to his physical condition.
this half crippled dybala = luxury player on low wages. as a starter i don't think that he could be able to play a full season with ~50 matches.
and i'm not a huge fan of dybala. i adored tevez and dybala's lack of testosterone felt like a letdown after the explosiveness and killer instinct of tevez. but we're way past that. look at our team now, dybala instead of milik+kean would easily add at least 15 points for the next few seasons. vlahovic, yildiz, chiesa, dybala + some winger subs wouldn't be bad. we'd need an other fitness team first though