All the focus for the Celtic fans this week seems to be on what Brendan Rodgers does in the transfer window. Which is strange because, normally, the headlines would be dominated by the build-up to the first Glasgow Derby of the season. Celtic face Rangers at Parkhead on Sunday and the coverage has been minimal but the transfer news has been coming thick and fast as Rodgers looks to spend much of the £30m Celtic got from the sale of Matt O’Riley to Brighton. And Fabrizio Romano reckons that Celtic are about to use some of the O’Riley cash to make a ‘really important’ signing this summer. Alex V…