By Matthew Cooper As many as six Serie A teams could compete in the Champions League next season following strong European showings by Italian clubs. The Champions League is being revamped, with UEFA increasing the number of teams involved from 32 to 36 as they implement a new eight-match group stage. Two of those extra four spots will go to the leagues that perform best in Europe this season based on their coefficient ranking and Serie A has already secured one of those places. It was confirmed after Roma and Atalanta both reached the semi-finals of the Europa League and Fiorentina reached th…