Schoen wasn't allowed to trade Barkley as Mara wanted to keep him.
https://www.nydailynews.com/2024/03/27/john-mara-giants-didnt-trade-saquon-barkley-eagles/#:~:text=John%20Mara%20said%20the%20Giants,hoping%20to%20re%2Dsign%20him.
Surprised they didn't move McKinney given that they had no plans on keeping him. Of course, if the offers were subpar, then that's probably why.
https://www.nydailynews.com/2024/03/27/john-mara-giants-didnt-trade-saquon-barkley-eagles/#:~:text=John%20Mara%20said%20the%20Giants,hoping%20to%20re%2Dsign%20him.
Surprised they didn't move McKinney given that they had no plans on keeping him. Of course, if the offers were subpar, then that's probably why.