Utter rubbish he's one of the best defenders we have, ofc if he hardly gets a game and then is thrown on late-match he may take a moment or two to get up to speed but that blame lies with Arteat for allowing non-starting players to rot on the sidelines
Yes he's had a couple of injuries but not for a while - admittedly he doesn't get the chance to get one nowadays but still i don't think he's any worse than, for example, Zin or Jesus for injuries and Arteta has them as nailed-on starters
That really is the stupidest thing you've ever said - anyone who's watched him play (at LB) for five minutes knows he's one of the most energetic and committed players we have
sure when Arteta sticks him in the middle of midfield, completely out of position, he looks a like a fish out of water but again that is enteirly down to Arteta being a complete fucking idiot and nothing to do with Tierney