Slovan Bratislava assistant coach Boris Kitka has spoken to Slovakian media about manager Vladimir Weiss Sr missing out on recent matches as they prepare to face Celtic. Weiss Sr was not on the bench for a cup victory away to AC Nitra through the week and also missed out on their dramatic late Superliga win against Dunajska Streda on Saturday night. Kitka has taken charge of both matches and is in regular contact with his boss, but it’s far from an ideal situation for them as they prepare to enter the Champions League group phase for the first time in their history. READ MORE: Celtic’s Champio…