If Chelsea/Stoke are keen to encourage their away support and lets say City feel the same would it not be possible to reciprocate with ticket pricing. Lets say we charge £30 for the 2500 Chelsea fans who come north and Chelsea charge us £30 for the return fixture. If tickets are normally say £50 then that would only cost each club £50,000, significant but not excessive, but would also make a big difference to the individual supporters attending, especially those that want to travel independently. Reciprocal arrangements could be made with any other clubs willing to participate. Only major flaw would be where one club's travelling support was of a significantly different size, but even then ticket prices could be averaged out.