they replaced all of their ageing fullbacks with new, young and better ones. they got B. Silva on top of an already WC attacking line of D. Silva, KDB, Aguero, GBJ. so they are definitely get better this season, ON PAPER. but thats the problem with them, they were better on paper last season too than the previous one, and the same many seasons before that, but the actual improvement on the pitch is minimal or non existent. expect the same this season (early CL exit, top4 in EPL but not the title)