Hank93
Brownlow Medallist
You're presuming the club doesn't have a set of both the away and clash with the 'home sponsor arrangement' (and home with 'away', for that matter) stashed away in case of odd situations. I suspect they would, even if they might be an older template.
Couple of Crows players have been running around in the old puma guernsey and there's been nothing done about it. So if you did have an old away jumper with home sponsor arrangements, I couldn't see it being a big issue.