Celtic are understandably red-hot favourites to beat Hearts on Saturday but manager Brendan Rodgers knows that his team will have to fight hard for the three points. Celtic are in excellent form after picking up five wins from five matches at the start of the season, in contrast to Hearts’ woeful form in all competitions. However, Steven Naismith’s side beat the Bhoys on two occasions last term, including at Celtic Park, so there’s no room to take anything for granted this afternoon. Rodgers has no injury or fitness problems heading into this one with Alistair Johnston and Cameron Carter-Vicke…