Gerrards chopping and changing

From dropping an in form Katic to playing Lee Wallace one week and not making the bench the next… Some of Stevie G, s decisions have been unfathomable even when we look settled and playing well some of the subs he,s put on have had me scratching my head… We are almost into the second half of the season and the back 4 still sames to change weekly…even when all are all fit… The 3 times borna barasic has broken down has me worried as well… He was injured when he arrived… was due diligence done on him and his injury and fitness record before he arrived, or has he just been unlucky… One thing is for sure he, s off no use to us injured… Views please