Former Celtic striker Chris Sutton has declared that the second-half performance vs Kilmarnock on Sunday was one of the worst he’s seen from the Bhoys. Celtic were 1-0 up and looking pretty comfortable going into the interval at Rugby Park. However, it seemed that Brendan Rodgers’ side never really got started in the second half. Killie got at the Celtic defence with some direct and physical play and, in the end, probably deserved to take all three points from the encounter. Nat Phillips conceded an own goal and Matty Kennedy netted a late effort to win 2-1. Rodgers himself wasn’t happy in his…