Mike Dodds is still undecided on one important tactical change ahead of Sunderland’s meeting with Millwall this weekend. Sunderland will look to make it four games unbeaten this afternoon as they prepare to host Millwall, having overcome two tricky meetings with Leeds United and West Brom. The Black Cats have now picked up five clean sheets in their last six games, but finding the back of the net has remained a problem, netting only three goals in the process. Mike Dodds‘ side have struggled to find a happy medium so far and spent the last two matches mostly penned into their own half – though…