Do Wrexham have a defensive problem?

But it has been far more settled this term, with Zak Vyner, Hyam and Callum Doyle - Wrexham's goal scorer in the loss to Birmingham - starting as the back three in all four of the Red Dragons' game so far this season.Parkinson even suggested transfer talk may have affected some of his players against Birmingham - particularly in the opening half."We will be endeavour to improve what we've got, but I think, a bit of uncertainty in the camp, players coming in, rumours of this and that," Parkinson said."Has that affected us? I don't know. It looked like it in the first half tonight because I just wanted to see more belief in us."Wrexham will be searching for answers ahead of their return to action at Millwall on Wednesday night (19:45 BST).Defender Hyam says Wrexham may need to find a "horrible" streak to help rectify things at the back."We're a talented group in there, we need to give ourselves a solid base to work off and that starts at the back," added the Scotland centre-back."Us as defenders need to pride ourselves on being more solid at the back and just defending the goal. "When we need to be, we need to be a bit horrible, we weren't quite that tonight so that's what it needs to be."