Yes, Cabal with average talent, fairly slow and the dribbling ability of any other CB. Cabal might become a half-decent backup CB in the future, but he is not starter material here. Kelly has been really good this year, but needs to rest a game soon. That's where Cabal could have been useful.
Technically, Cabal is a liability, so I understand why he is put on the wing to not damage too much. But even Kostic would be more helpful on the wing than Cabal. He is a LCB that, if he wasn't left footed, would never have been put out wide.