Sheffield Wednesday have a few gaps in their squad to plug this summer. And their retained list may have opened up a new one. Sheffield Wednesday recently released their retained list following the conclusion of the 2023/24 Championship campaign. And it’s highlighted the amount of work that the Owls need to do in the upcoming summer transfer window. There’s gaps all over the pitch, but one specific issue that Danny Rohl might look to address is the ageing midfield. It’s an ageing squad in general, but Sheffield Wednesday’s options in midfield; Barry Bannan, Liam Palmer, and Will Vaulks are all…