Hibernian boss David Gray is not a happy man after watching his team lose to Celtic for a second successive week. Brendan Rodgers’ side got the better of them by a 2-0 margin at Easter Road last Sunday before winning 3-1 at Celtic Park earlier today. Like the first meeting, the Bhoys got off to an electric start in the Scottish League Cup clash, scoring in the opening minutes through Daizen Maeda. Gray reckons his players are making the same mistakes again and again despite strong feedback from his coaching team, lamenting how Celtic managed to dominate the match. David Gray ‘angry’ after Leag…