The Red Sox finished their outfield purge as they trade Andrew Benintendi to the Royals in a deal that also involved the Mets:

The Red Sox traded Benintendi along with an unspecified amount of cash to the Royals for outfielder Franchy Cordero and two players to be named later. Boston also received minor league right-handed pitcher Josh Winckowski and a player to be named later from the Mets. The Mets received outfield prospect Khalil Lee from the Royals.

ESPN.com

Benintendi saw a drop in his performance in 2019, and was terrible in a handful of plate appearances in 2020. Benintendi changed his swing in 2019, which can be seen in his adoption of a steeper launch angle. That led to him hitting the ball hard, but also striking out more. The trade-off was not in his favor.

Both Cordero and Benintendi play 2021 at seasonal age 26, so they are both in their early primes. Cordero played eight seasons in the minors, with rather unremarkable stats. His .236/.304/.433 slash line in .315 major league PA seems about right to me. If you’re 26 and not a star, there’s not much chance of you becoming a star.

Winckowski could be a usable pitcher, but he’s pitched at low levels for his age. Unless the players to be named later are really good, the Red Sox don’t appear to have gotten much for a prime player with star potential. If the injuries heal and the Royals fix Benintendi’s swing, this could be the steal of the decade.