Celtic captain Callum McGregor is in the mood to do battle with Rangers this Saturday as his side bid to win a domestic double. The 30-year-old has led the fight in the Scottish Premiership this term, rallying the troops in precarious moments to deliver where it ultimately mattered. McGregor has also played in every Glasgow Derby clash this season, yielding three victories and a draw at Ibrox in April, and he will be desperate to get the better of Celtic’s bitter rivals at Hampden come this weekend. Intriguingly, speaking in his pre-match press conference, the skipper revealed Brendan Rodgers …