Isn't it more the case that the organization didn't have anyone else who they thought was better to play with Karlsson? He has more experience than Claesson who I guess would be the other choice. I think the only other option would be to make a trade for one, but that costs assets & they would have to have sent back salary the other way that at least matches.
Still pretty bad to end up in a situation where Oduya is your best option at left D. From a management standpoint.