Celtic full-back Johnston out until October

Celtic full-back Alistair Johnston will be out of action until October, manager Martin O'Neill has confirmed.The Canada international, 27, went off at half time in the second game of the season against Kilmarnock, having missed most of the last campaign with a hamstring injury.Now a scan has revealed he faces another spell on the sidelines."There was definitely something there, and I think the prognosis is really that it will be some time in October for him," said O'Neill prior to the Champions