McGrath doesn't appear to lack focus, it's fitness. He's played nearly every game this season and rarely gets taken off. He's taken a few belters to the heid in that time too. If we limit ourselves to players that are going in any given season, we're going to have a lot of difficulty fulfilling fixtures. What about the guy who's coming in on a six month loan? Is McGrath any different to Nisbet in that he's playing for his future elsewhere? Or Miovski last season?
In my opinion, McGrath is just suffering from the same drop of form that Shinnie, Nilsen, Devlin and numerous others are experiencing after an intense start to the season and a light squad. Difficult to tell with MacKenzie, but looks like he isn't fully fit after his injury