There's a gratifying way you can lessen the issues caused by out of the position players, but it is not made entirely clear to the players.If you are putting in a player who is out of position, then check out the chemistry FUT 23 Coins tracker on the left side, you'll be able to see a yellow symbol that is filling in places that they'd otherwise enhance.
For instance, an Argentinian player that plays at River Plate will fill a provisional yellow spot for Argentina, River Plate, and for the CONMEBOL Libertadores league. This will not affect the chemistry of any of the participants in your squad However, it can give you an indication of where the team's chemistry would take place if any out of position players were corrected.
So, this should solve the issue if thought during FIFA 23 'can you change players' positions can you change the position of a player's concept while also giving you an option to work around the problem. If you do require help for the various FIFA 23 SBC solutions though be sure to look over our tutorial for everything that we've covered so far.