He's exactly the type of player we don't need more of in attack. Talented but not a winner. We need people who turn up on the biggest stages as well as having a bit of quality. It's defence where we lack talent, not up front. That's where we lack mentality.
What does a statement like “not a winner” even mean, though? In a bit more than 3 season with Juventus, he has turned up and scored in important matches vs. Roma, Milan, Internazionale, Lazio (in the last minute which gave Juventus their 10th title over Napoli), Tottenham, Bayern, United (where he was one of the best players on the pitch)...
https://www.theguardian.com/footbal...ited-juventus-champions-league-player-ratings
And was cracking vs. Barcelona:
Of course, he can't turn up in every major game and football is above everything else a team sport, and he wasn't super effective vs. Real Madrid in Cardiff, but was Del Piero also not a winner because he lost back-to-back Champions League finals and missed critical chances at EURO 2000?
Dybala has shown a bit more than Salah in Italy at comparable ages, and while he's not as quick, he's a more creative forward who could excel under a manager who consistently puts him in favorable conditions in a dynamic attack (which Allegri hasn't always because he first used him as a deep attacking midfielder following Higuaín's transfer, and with Ronaldo's crowning as Juventus' principal in attack, Dybala is left to play subsidiary roles out wide off Mandzukić — which seem more suited to Bernardeschi).
IMO, if Dybala is available at a reasonable price, seems motivated and we plan on shaking things up, United shouldn't turn up its nose at a quality player because he doesn't fulfill some nebulous winner™ criteria, unless we can procure someone better or more talented.