Sheffield Wednesday manager Danny Rohl has a number of huge decisions to make ahead of the Steel City derby this weekend, but one could pay dividends for the whole season if he gets it right. Danny Rohl arrived at Sheffield Wednesday last season with a mammoth task on his hands in trying to keep the Owls in the Championship, and somehow, despite all hope being written off, he succeeded. Now, his biggest challenge to date looms in the form of his first-ever match against Sheffield United, a derby Rohl has described as ‘special’ and ‘important’ in the buildup. It has been an up-and-down season f…