For sure. The lack of wingers could potentially mean moving guys like Duk or McGrath into the wider positions of needed but wouldn't be too much of an issue I think.
Not sure if Robson will want to do that at the moment with the number of centre backs and forwards we have but little depth elsewhere. Possibly a worry that for all the CB's we have Jensen and Gartenmann are probably the only ones that would suit a back four. Couldn't see Rubezic, Macdonald or Williams fitting it.