Chelsea vs Southampton prediction (Over/Under)

Chelsea got 2-2 , 1-2 and 2-0 result at home. They only did not allow a goal against Arsenal match which gunners showed a red card in the first half. Chelsea scored 2 goals 2 of 3 home matches and allowed a goal against Crystal Palace and Swansea double. Diego Costa is suspended that he will not play. Courtais is injured, Begovic will start. On the other hand, Southampton has 9 points after 7 matches.A noticeably record that Southampton got 2-2,0-0 ,0-0 results on road. They try to lock up game. However, they can loss the game if they will do same thing against talented Chelsea team. They will definetly try counter attacks and long shots where Begovic does not give confident. It will be interesting game for Mourinho to crash doubts on a team. When I think about Pelle, Mane and Tadic , I do not see any reason for not scoring a goal on raod. I expect enjoyable game with lots of goals. Maybe Chelsea will win 2-1 or 3-1 and not surprised 2-2