Kyle Manzardo

The Mariners have also approached the Red Sox about trading for Triston Casas, so they appear to be serious about upgrading at first base this off-season. For the Guardians, trading Naylor makes sense if they are getting a big enough return. The 27-year-old is set to be an unrestricted free agent after this season and may be out of Cleveland's price range. The team could look to trade him now when they are likely to get more in return than if they waited for the trade deadline. With Kyle Manzardo on the roster, the team also has a built-in replacement at first base, so this is a situation that's worth monitoring.