Huascar Ynoa
In terms of pure arm talent, Huascar Ynoa is among the best in the Braves' organization. Ynoa exploded onto the scene in the first half of 2021 with that fastball of his and looked like he was on his way to establishing himself as one of the Braves' starters for the foreseeable. Unfortunately, he came back to earth late that season and a series of injuries culminating in Tommy John surgery in 2022 has Ynoa currently on the outside looking in when it comes to a big league roster spot.
Presumably healthy now, the nice thing about Ynoa is that he has the ability to start as well as pitch out of the bullpen. With the Braves' bullpen stacked at the moment and Ynoa's questionable track record in the rotation, the best move may be to move him to a team that wants to add a power arm and get some talent that can build up the low minors back for him. Such a move may only make sense if Ynoa has a good spring, though, as teams will rightly be wary of his injury history until he shows that he is healthy and able to perform.
JP Martinez
Truth be told, there are few position players that the Braves have that should be on the trade market. Atlanta doesn't have a lot of depth behind their everyday guys in their lineup especially after the Braves traded Vaughn Grissom for Chris Sale and those that are in the lineup shouldn't be going anywhere. However, one name that is theoretically possible to move would be JP Martinez.
The Braves traded for Martinez earlier this offseason to provide some insurance for their outfield and he isn't an uninteresting player. While his numbers in the big leagues leave something to be desired, his numbers in the minor leagues were a lot better as he posted a .961 OPS at Triple-A to go along with 38 stolen bases. Unfortunately for Martinez, the Braves already have a couple speedy outfield options in Forrest Wall and Eli White available to them this spring, so Martinez should be made available for the right deal.