MLB Trade Rumors lists two of the Red Sox star outfielders as top trade candidates before the deadline: Jarren Duran and Wilyer Abreu. Here's the logic provided on Duran:

The Pittsburgh Pirates could look to trade star outfielder Bryan Reynolds in the early stages of his $106 million contract.

The trade would send Benintendi and cash considerations — presumably enough for the Padres to be able to afford his five-year, $75 million contract through this year — to San Diego for High-A pitching prospect Clark Candiotti.